Rewrite to use flakes

This puts a hard dependency on 20.09, but that's to be expected.
2020-10-01 18:46:04 -04:00 · 2020-10-01 18:46:04 -04:00 · a75c64d04a
parent 744cf032c3
commit a75c64d04a
172 changed files with 2833 additions and 3141 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,2 +1 @@
-secrets.nix
 result
--- a/77
+++ b/77
@ -1,77 +0,0 @@
-USER := hlissner
-HOST := kuro
-HOME := /home/$(USER)
-
-NIXOS_VERSION := 20.03
-NIXOS_PREFIX  := $(PREFIX)/etc/nixos
-COMMAND       := test
-FLAGS         := -I "config=$$(pwd)/config" \
-				 -I "modules=$$(pwd)/modules" \
-				 -I "bin=$$(pwd)/bin" \
-				 $(FLAGS)
-
-# The real Labowski
-all: channels
-	@sudo nixos-rebuild $(FLAGS) $(COMMAND)
-
-install: channels update config move_to_home
-	@sudo nixos-install --root "$(PREFIX)" $(FLAGS)
-
-upgrade: update switch
-
-update: channels
-	@sudo nix-channel --update
-
-switch:
-	@sudo nixos-rebuild $(FLAGS) switch
-
-build:
-	@sudo nixos-rebuild $(FLAGS) build
-
-boot:
-	@sudo nixos-rebuild $(FLAGS) boot
-
-rollback:
-	@sudo nixos-rebuild $(FLAGS) --rollback $(COMMAND)
-
-dry:
-	@sudo nixos-rebuild $(FLAGS) dry-build
-
-gc:
-	@nix-collect-garbage -d
-
-vm:
-	@sudo nixos-rebuild $(FLAGS) build-vm
-
-clean:
-	@rm -f result
-
-
-# Parts
-config: $(NIXOS_PREFIX)/configuration.nix
-move_to_home: $(HOME)/.dotfiles
-
-channels:
-	@sudo nix-channel --add "https://nixos.org/channels/nixos-${NIXOS_VERSION}" nixos
-	@sudo nix-channel --add "https://nixos.org/channels/nixos-unstable" nixos-unstable
-	@sudo nix-channel --add "https://github.com/rycee/home-manager/archive/release-${NIXOS_VERSION}.tar.gz" home-manager
-	@sudo nix-channel --add "https://nixos.org/channels/nixpkgs-unstable" nixpkgs-unstable
-
-$(NIXOS_PREFIX)/configuration.nix:
-	@sudo nixos-generate-config --root "$(PREFIX)"
-	@echo "import /etc/dotfiles \"$${HOST:-$$(hostname)}\" \"$$USER\"" | sudo tee "$(NIXOS_PREFIX)/configuration.nix"
-	@[ -f machines/$(HOST).nix ] || echo "WARNING: hosts/$(HOST)/default.nix does not exist"
-
-$(HOME)/.dotfiles:
-	@mkdir -p $(HOME)
-	@[ -e $(HOME)/.dotfiles ] || sudo mv /etc/dotfiles $(HOME)/.dotfiles
-	@[ -e /etc/dotfiles ] || sudo ln -s $(HOME)/.dotfiles /etc/dotfiles
-	@chown $(USER):users $(HOME) $(HOME)/.dotfiles
-
-# Convenience aliases
-i: install
-s: switch
-up: upgrade
-
-
-.PHONY: config
--- a/README.md
+++ b/README.md
@ -1,71 +1,85 @@
-[![Made with Doom Emacs](https://img.shields.io/badge/Made_with-Doom_Emacs-blueviolet.svg?style=flat-square&logo=GNU%20Emacs&logoColor=white)](https://github.com/hlissner/doom-emacs)
-[![NixOS 20.03](https://img.shields.io/badge/NixOS-v20.03-blue.svg?style=flat-square&logo=NixOS&logoColor=white)](https://nixos.org)
+<div align="center">
   
-![Me looking busy](/../screenshots/fluorescence/fakebusy.png?raw=true)
+[![Made with Doom Emacs](https://img.shields.io/badge/Made_with-Doom_Emacs-blueviolet.svg?style=flat-square&logo=GNU%20Emacs&logoColor=white)](https://github.com/hlissner/doom-emacs)
+[![NixOS 20.09](https://img.shields.io/badge/NixOS-v20.09-blue.svg?style=flat-square&logo=NixOS&logoColor=white)](https://nixos.org)
+
+</div>
+
+**Hey,** you. You're finally awake. You were trying to configure your OS declaratively, right? Walked right into that NixOS ambush, same as us, and those dotfiles over there.
+
+<img src="https://raw.githubusercontent.com/hlissner/dotfiles/screenshots/fluorescence/fakebusy.png" width="100%" />

 <p align="center">
-<span><img src="/../screenshots/fluorescence/desktop.png?raw=true" height="188" /></span>
-<span><img src="/../screenshots/fluorescence/rofi.png?raw=true" height="188" /></span>
-<span><img src="/../screenshots/fluorescence/tiling.png?raw=true" height="188" /></span>
+<span><img src="/../screenshots/fluorescence/desktop.png" height="187" /></span>
+<span><img src="/../screenshots/fluorescence/rofi.png" height="187" /></span>
+<span><img src="/../screenshots/fluorescence/tiling.png" height="187" /></span>
 </p>

-# My dotfiles
+------

-+ **Operating System:** NixOS
-+ **Shell:** zsh + zgen
-+ **DM:** lightdm + lightdm-mini-greeter
-+ **WM:** bspwm + polybar
-+ **Editor:** [Doom Emacs][doom-emacs] (and occasionally [vim][vimrc])
-+ **Terminal:** st
-+ **Launcher:** rofi
-+ **Browser:** firefox
-+ **GTK Theme:** [Ant Dracula](https://github.com/EliverLara/Ant-Dracula)
-+ **Icon Theme:** [Paper Mono Dark](https://github.com/snwh/paper-icon-theme)
+| | |
+|-|-|
+| **Shell:** | zsh + zgen |
+| **DM:** | lightdm + lightdm-mini-greeter |
+| **WM:** | bspwm + polybar |
+| **Editor:** | [Doom Emacs][doom-emacs] (and occasionally [vim]) |
+| **Terminal:** | st |
+| **Launcher:** | rofi |
+| **Browser:** | firefox |
+| **GTK Theme:** | [Ant Dracula](https://github.com/EliverLara/Ant-Dracula) |

-*Works on my machine* ¯\\\_(ツ)_/¯
+-----

 ## Quick start

-```sh
-# Assumes your partitions are set up and root is mounted on /mnt
-git clone https://github.com/hlissner/dotfiles /etc/dotfiles
-make -C /etc/dotfiles install
-```
+1. Yoink [NixOS 20.09][nixos] (must be newer than Sept 12, 2020 for `nixos-install --flake`).
+2. Boot into the installer.
+3. Do your partitions and mount your root to `/mnt`
+4. `git clone https://github.com/hlissner/dotfiles /etc/nixos`
+5. Install NixOS: `nixos-install --root /mnt --flake #XYZ`, where `XYZ` is your
+   hostname.  Use `#generic` for a simple, universal config.
+6. OPTIONAL: Create a sub-directory in `hosts/` for your device. See [host/kuro]
+   as an example.
+7. Reboot!

-Which is equivalent to:
+## Management

-```sh
-USER=${USER:-hlissner}
-HOST=${HOST:-kuro}
-NIXOS_VERSION=20.03
-DOTFILES=/home/$USER/.dotfiles
+Behold. `bin/hey`.

-git clone https://github.com/hlissner/dotfiles /etc/dotfiles
-ln -s /etc/dotfiles $DOTFILES
-chown -R $USER:users $DOTFILES
+| Command              | Description                                                     |
+|----------------------|-----------------------------------------------------------------|
+| `hey rebuild`       | Rebuild this flake                                              |
+| `hey upgrade`       | Update flake lockfile and switch to it                          |
+| `hey rollback`      | Roll back to previous system generation                         |
+| `hey gc`            | Runs `nix-collect-garbage -d`. Use sudo to clean system profile |
+| `hey deploy REMOTE` | Deploy these dotfiles to REMOTE (over ssh)                      |
+| `hey check`         | Run tests and checks for this flake                             |
+| `hey show`          | Show flake outputs of this repo                                 |

-# make channels
-nix-channel --add "https://nixos.org/channels/nixos-${NIXOS_VERSION}" nixos
-nix-channel --add "https://github.com/rycee/home-manager/archive/release-${NIXOS_VERSION}.tar.gz" home-manager
-nix-channel --add "https://nixos.org/channels/nixpkgs-unstable" nixpkgs-unstable
+## Frequently asked questions

-# make /etc/nixos/configuration.nix
-nixos-generate-config --root /mnt
-echo "import /etc/dotfiles \"$$HOST\" \"$$USER\"" >/mnt/etc/nixos/configuration.nix
+ **How do I change the default username?**

-# make install
-nixos-install --root /mnt -I "my=/etc/dotfiles"
-```
+  1. Set `USER` the first time you run `nixos-install`: `USER=myusername
+     nixos-install --root /mnt --flake #XYZ`
+  2. Or change `"hlissner"` in modules/options.nix.

-### Management
+ **How do I "set up my partitions"?**

-+ `make` = `nixos-rebuild test`
-+ `make switch` = `nixos-rebuild switch`
-+ `make upgrade` = `nix-channel --update && nixos-rebuild switch`
-+ `make install` = `nixos-generate-config --root $PREFIX && nixos-install --root
-  $PREFIX`
-+ `make gc` = `nix-collect-garbage -d` (use sudo to clear system profile)
+  My main host [has a README](hosts/kuro/README.org) you can use as a reference.
+  I set up an EFI+GPT system and partitions with `parted` and `zfs`.
+  
+ **How 2 flakes?**
+
+  It wouldn't be the NixOS experience if I gave you all the answers in one,
+  convenient place.
+
+ **Why is the script called `hey`?**
+
+  And I say... https://www.youtube.com/watch?v=ZZ5LpwO-An4


 [doom-emacs]: https://github.com/hlissner/doom-emacs
-[vimrc]: https://github.com/hlissner/.vim
+[vim]: https://github.com/hlissner/.vim
+[nixos]: https://releases.nixos.org/?prefix=nixos/20.09-small/
+[host/kuro]: https://github.com/hlissner/dotfiles/tree/master/hosts/kuro
--- a/bin/hey
+++ b/bin/hey
@ -0,0 +1,135 @@
+#!/usr/bin/env zsh
+
+# I don't believe the interface for Nix's utility scripts are very good. Guix's,
+# on the other hand, is excellent. Management of your OS is done by a single
+# program with simpler, more intuitive commands. This script is a rudimentary
+# attempt at giving me that.
+#
+#   dots cd|check      -> nix flake check $DOTFILES
+#   dots sh|show       -> nix flake show $DOTFILES
+#   dots u|update      -> nix flake update --recreate-lock-file $DOTFILES
+#   dots re|rebuild    -> nixos-rebuild --flake $DOTFILES#$HOSTNAME ${1:-build}
+#   dots rollback      -> dots rebuild --rollback switch
+#   dots vm            -> dots rebuild vm
+#   dots up|upgrade    -> dots update && dots rebuild switch
+#   dots gc            -> GC user profile, optimise nix store
+#   sudo dots gc       -> GC, optimise nix store, & delete old boot entries
+#   dots push REMOTE   -> push flake to remote (over SSH) and rebuild remotely
+#   dots gen|generations -> explore, manage, diff across generations (WIP)
+#
+# dots (with no sub-command) can also be used as an alternative to nix-env:
+#
+#   dots -q
+#   dots -iA nixos.htop
+#   dots -e htop
+
+set -e
+REMOTE=${REMOTE:-"~/.config/dotfiles"}
+DOTFILES="${0:a:h}/.."
+
+#
+function main {
+  function _do { [[ $DRYRUN ]] && echo "$@" || "$@" }
+
+  ### Helpers
+  function _usage {
+    echo "Usage: dots COMMAND [FLAGS...] [ARGS...]"
+    echo
+    echo "Available commands:"
+    echo "  init               TODO"
+    echo "  env (e)            TODO"
+    echo "  shell (sh)         TODO"
+    echo "  build (b)          TODO"
+    echo "  upgrade (up)       TODO"
+    echo "  rebuild (re)       TODO"
+    echo "  rollback           TODO"
+    echo "  gc                 TODO"
+    echo "  vm                 TODO"
+    echo "  repl               TODO"
+    echo "  push               Push thie config to a remote NixOS system and rebuild it"
+    echo "  generations (gen)  TODO"
+  }
+
+  function _rebuild {
+    # Move to $DOTFILES to prevent polluting the system with result links
+    pushd $DOTFILES >/dev/null
+    _do sudo nixos-rebuild --flake ".#$HOSTNAME" ${@:-build}
+    popd >/dev/null
+  }
+
+  function _update {
+    echo "Updating NixOS flake"
+    _do nix flake update --recreate-lock-file "$DOTFILES"
+  }
+
+  function _gc {
+    if [[ $EUID == 0 ]]; then
+      echo "Cleaning up your system..."
+      _do sudo nix-collect-garbage ${@:--d}
+      # nix-collect-garbage is a Nix tool, not a NixOS tool. It won't delete old
+      # boot entries until you do a nixos-rebuild (which means we'll always have
+      # 2 boot entries at any time). Instead, we properly delete them by
+      # reloading the current environment.
+      _do sudo nix-env --delete-generations old --profile /nix/var/nix/profiles/system
+      _do sudo /nix/var/nix/profiles/system/bin/switch-to-configuration switch
+    else
+      echo "Cleaning up your user profile..."
+      _do nix-collect-garbage ${@:--d}
+    fi
+    _do nix-store --optimise
+  }
+
+  ###
+  cmd="$1"
+  [[ $# > 0 ]] && shift
+  case "$cmd" in
+    # TODO Repl/shell for nixos+dotfiles
+    # sh|shell)    _do nix-shell "$@"             ;;
+    # repl)        _do nix develop "$@"           ;;
+
+    ch|check)    _do nix flake check "$DOTFILES";;
+    sh|show)     _do nix flake show "$DOTFILES" ;;
+
+    re|rebuild)  _rebuild "${@:-switch}"        ;;
+    rollback)    _rebuild --rollback switch     ;;
+    vm)          _rebuild "$@" vm               ;;
+
+    u|update)    _update "$@"                  ;;
+    up|upgrade)  _update && _rebuild switch    ;;
+
+    gc)          _gc "$@"                       ;;
+    push)
+      rsync -avzh ./ "$1:$REMOTE/"
+      ssh -t -l "$USERNAME" "$1" "$REMOTE/dots re" "${@[2,-1]}"
+      ;;
+
+    gen|generations)
+      profile=/nix/var/nix/profiles/system
+      case "$1" in
+        switch) >&2 echo "Targeted rollback not supported yet" ;;  # TODO Is this true?
+        diff)
+          to=/nix/var/nix/profiles/system-${2}-link
+          diff \
+            <(nix-store -q --references $profile) \
+            <(nix-store -q --references $to)
+          ;;
+        remove)
+          shift
+          _do sudo nix-env --delete-generations --profile $profile $@
+          ;;
+        "")
+          _do sudo nix-env --list-generations --profile $profile
+          ;;
+      esac
+      ;;
+
+    h|help|-h|--help) _usage ;;
+    -*) _do nix-env "$cmd" "$@" ;;
+    "") _usage ;;
+    *)  echo "Couldn't find command: $cmd" 1>&2
+        exit 1
+        ;;
+  esac
+}
+
+main "$@"
--- a/bin/scrcap
+++ b/bin/scrcap
@ -5,8 +5,7 @@
 # capture) and stores it in the clipboard.

 tmp=$(mktemp)
-cleanup() { rm -f "$tmp"; }
-trap cleanup EXIT
+trap "rm -f '$tmp'" EXIT

 # Delay for long enough that we can refocus the targeted window
 if maim --delay=${2:-1} -us >"$tmp"; then
--- a/config/bspwm/bspwmrc
+++ b/config/bspwm/bspwmrc
@ -1,5 +1,10 @@
 #!/usr/bin/env bash

+# case $HOSTNAME in
+#   kuro)  export LAN=eno1   ;;
+#   shiro) export LAN=wlp3s0 ;;
+# esac
+
 export MONITOR=$(xrandr -q | grep primary | cut -d' ' -f1)
 export MONITORS=( $(xrandr -q | grep ' connected' | cut -d' ' -f1) )
 MONITOR=${MONITOR:-${MONITORS[0]}}
--- a/config/git/aliases.zsh
+++ b/config/git/aliases.zsh
@ -1,9 +1,8 @@
 #!/usr/bin/env zsh

 g() { [[ $# = 0 ]] && git status --short . || git $*; }
-compdef g=hub

-alias git='noglob hub'
+alias git='noglob git'
 alias ga='git add'
 alias gap='git add --patch'
 alias gb='git branch'
--- a/config/rofi/snippets/issue-resolved
+++ b/config/rofi/snippets/issue-resolved
--- a/modules/themes/aquanaut/README.md
+++ b/modules/themes/aquanaut/README.md
--- a/config/stumpwm/config
+++ b/config/stumpwm/config
@ -10,7 +10,7 @@
 ;;  :port swank::default-server-port)

 ;;;
-(defvar *config-dir* "~/.dotfiles/config/stumpwm")
+(defvar *config-dir* "~/.config/dotfiles/config/stumpwm")

 (defcommand reload-dotfiles () ()
  (load (concat *config-dir* "/config"))
--- a/config/sxhkd/sxhkdrc
+++ b/config/sxhkd/sxhkdrc
@ -25,16 +25,16 @@ super + shift + grave
 	emacsclient -e '(open-scratch-frame)'

 super + space
-	~/.dotfiles/bin/rofi/appmenu
+	~/.config/dotfiles/bin/rofi/appmenu

 super + Tab
-	~/.dotfiles/bin/rofi/windowmenu
+	~/.config/dotfiles/bin/rofi/windowmenu

 super + backslash
-	~/.dotfiles/bin/rofi/passmenu
+	~/.config/dotfiles/bin/rofi/passmenu

 super + slash
-	~/.dotfiles/bin/rofi/filemenu -x
+	~/.config/dotfiles/bin/rofi/filemenu -x

 super + Escape
 	pkill -USR1 -x sxhkd
@ -52,21 +52,21 @@ super + {_,ctrl + }f


 super + {_,ctrl +}{h,j,k,l}
-	~/.dotfiles/bin/bspwm/focus {_,-m }{west,south,north,east}
+	~/.config/dotfiles/bin/bspwm/focus {_,-m }{west,south,north,east}

 super + shift + {_,ctrl +}{h,j,k,l}
-	~/.dotfiles/bin/bspwm/swap {_,-m }{west,south,north,east}
+	~/.config/dotfiles/bin/bspwm/swap {_,-m }{west,south,north,east}


 ## Resize by preselection
 super + alt + {1-9}
-	~/.dotfiles/bin/bspwm/presel 0.{1-9}
+	~/.config/dotfiles/bin/bspwm/presel 0.{1-9}

 super + alt + {h,j,k,l}
 	bspc node -p {west,south,north,east}

 super + alt + Return
-	~/.dotfiles/bin/bspwm/subtract-presel
+	~/.config/dotfiles/bin/bspwm/subtract-presel

 super + alt + Delete
 	bspc node -p cancel
--- a/config/tmux/config
+++ b/config/tmux/config
@ -92,7 +92,7 @@ bind - break-pane
 bind _ join-pane

 # reload config without killing server
-bind r source-file ~/.dotfiles/config/tmux/config \; display-message "  Config reloaded..".
+bind r source-file ~/.config/dotfiles/config/tmux/config \; display-message "  Config reloaded..".
 bind ^r refresh-client


--- a/config/zsh/.zshrc
+++ b/config/zsh/.zshrc
@ -1,6 +1,3 @@
-export ZGEN_DIR="$XDG_CACHE_HOME/zgen"
-export ZGEN_SOURCE="$ZGEN_DIR/zgen.zsh"
-
 [ -d "$ZGEN_DIR" ] || git clone https://github.com/tarjoilija/zgen "$ZGEN_DIR"
 source $ZGEN_SOURCE
 if ! zgen saved; then
--- a/config/zsh/aliases.zsh
+++ b/config/zsh/aliases.zsh
@ -20,6 +20,16 @@ alias gurl='curl --compressed'
 alias y='xclip -selection clipboard -in'
 alias p='xclip -selection clipboard -out'

+alias sc=systemctl
+alias ssc='sudo systemctl'
+
+if command -v exa >/dev/null; then
+  alias exa="exa --group-directories-first";
+  alias l="exa -1";
+  alias ll="exa -lg";
+  alias la="LC_COLLATE=C exa -la";
+fi
+
 autoload -U zmv

 take() {
--- a/config/zsh/completion.zsh
+++ b/config/zsh/completion.zsh
@ -1,3 +1,5 @@
+fpath+=( $ZDOTDIR/completions )
+
 ## Options
 setopt COMPLETE_IN_WORD    # Complete from both ends of a word.
 setopt PATH_DIRS           # Perform path search even on command names with slashes.
--- a/config/zsh/completions/_dots
+++ b/config/zsh/completions/_dots
@ -0,0 +1,35 @@
+#compdef nix
+
+_dots_dispatch () {
+    local cmd="$@"
+    local offset=$#
+    CURRENT=$((CURRENT-$offset))
+    words=($cmd "${words[$((2 + offset)),-1]}")
+    _$cmd
+}
+
+_dots_command_list () {
+    dots | sed '1,/Available commands:/d' | awk '{ print $1 }'
+}
+
+_dots () {
+    local -a commands
+    IFS=$'\n' commands=($(_dots_command_list))
+
+    if (( CURRENT == 2 )); then
+        _describe -t commands "dots commands" commands
+        return
+    fi
+    integer ret=1
+    case ${words[2]} in
+        ch|channel) _dots_dispatch nix-channel ;;
+        b|build)    _dots_dispatch nix-build ;;
+        ch|check)   _dots_dispatch nix flake check ;;
+        sh|show)    _dots_dispatch nix flake show ;;
+        -*)         _dots_dispatch nix-env ;;
+        *)          _message "Command not found: ${words[2]}" ;;
+    esac
+    return ret
+}
+
+_dots
--- a/config/zsh/config.zsh
+++ b/config/zsh/config.zsh
@ -32,7 +32,7 @@ unsetopt HUP              # Don't kill jobs on shell exit.
 unsetopt CHECK_JOBS       # Don't report on jobs when shell exit.

 ## History
-HISTFILE="$HOME/.cache/zhistory"
+HISTFILE="$XDG_CACHE_HOME/zhistory"
 HISTSIZE=1000                    # Max events to store in internal history.
 SAVEHIST=1000                    # Max events to store in history file.

--- a/default.nix
+++ b/default.nix
@ -1,76 +0,0 @@
-# default.nix --- the heart of my dotfiles
-#
-# Author:  Henrik Lissner <henrik@lissner.net>
-# URL:     https://github.com/hlissner/dotfiles
-# License: MIT
-#
-# This is ground zero, where the absolute essentials go, to be present on all
-# systems I use nixos on. Most of which are single user systems (the ones that
-# aren't are configured from their hosts/*/default.nix).
-
-device: username:
-{ pkgs, options, lib, config, ... }:
-{
-  networking.hostName = lib.mkDefault device;
-  my.username = username;
-
-  imports = [
-    ./modules
-    "${./hosts}/${device}"
-  ] ++ (if builtins.pathExists(/etc/nixos/cachix.nix) then [
-    /etc/nixos/cachix.nix
-  ] else []);
-
-  ### NixOS
-  nix.autoOptimiseStore = true;
-  nix.nixPath = options.nix.nixPath.default ++ [
-    # So we can use absolute import paths
-    "bin=/etc/dotfiles/bin"
-    "config=/etc/dotfiles/config"
-  ];
-
-  # Add custom packages & unstable channel, so they can be accessed via pkgs.*
-  nixpkgs.overlays = import ./packages;
-  nixpkgs.config.allowUnfree = true;  # forgive me Stallman senpai
-
-  # These are the things I want installed on all my systems
-  environment.systemPackages = with pkgs; [
-    # Just the bear necessities~
-    coreutils
-    git
-    killall
-    unzip
-    vim
-    wget
-    sshfs
-
-    gnumake               # for our own makefile
-    my.cached-nix-shell   # for instant nix-shell scripts
-    cachix                # less time buildin' mo time nixin'
-    (writeScriptBin "nix-shell" ''
-      #!${stdenv.shell}
-      NIX_PATH="nixpkgs-overlays=/etc/dotfiles/packages/default.nix:$NIX_PATH" ${nix}/bin/nix-shell "$@"
-    '')
-  ];
-  environment.shellAliases = {
-    nix-env = "NIXPKGS_ALLOW_UNFREE=1 nix-env";
-    nsh = "nix-shell";
-    nen = "nix-env";
-    dots = "make -C ~/.dotfiles";
-  };
-
-  # Default settings for primary user account. `my` is defined in
-  # modules/default.nix
-  my.user = {
-    isNormalUser = true;
-    uid = 1000;
-    extraGroups = [ "wheel" "video" "networkmanager" ];
-    shell = pkgs.zsh;
-  };
-
-  # This value determines the NixOS release with which your system is to be
-  # compatible, in order to avoid breaking some software such as database
-  # servers. You should change this only after NixOS release notes say you
-  # should.
-  system.stateVersion = "20.03"; # Did you read the comment?
-}
--- a/flake.lock
+++ b/flake.lock
@ -0,0 +1,96 @@
+{
+  "nodes": {
+    "emacs-overlay": {
+      "locked": {
+        "lastModified": 1601770752,
+        "narHash": "sha256-eZo23q0aWyNgFUCVnxsA16vh9My0yJJME9GMfFeS9jo=",
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "rev": "5ddbef90f92809744275c3ec78b5464a376b6f11",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "type": "github"
+      }
+    },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixos-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1601584113,
+        "narHash": "sha256-4gLn43KG5KzJatEul+/TfsiMnj3FK3ZU6VMdXdPpdRY=",
+        "owner": "rycee",
+        "repo": "home-manager",
+        "rev": "9ff2188c5d2c65b20ded3f2e7a759319866313d3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rycee",
+        "ref": "master",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "nixos": {
+      "locked": {
+        "lastModified": 1601200199,
+        "narHash": "sha256-wf5XDJJ8tJw0gZH7S1+r/I/k321bj9jGVzRXEVtbfkQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "0cfe5377e8993052f9b0dd56d058f8008af45bd9",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-20.09",
+        "type": "indirect"
+      }
+    },
+    "nixos-hardware": {
+      "locked": {
+        "lastModified": 1600019032,
+        "narHash": "sha256-o/PxAWx2O85NyQRDuhZ5QbAACA5yyglmA7hN9GSI27g=",
+        "owner": "nixos",
+        "repo": "nixos-hardware",
+        "rev": "684eaddf74109b2bedb8b585a25714eb9ea5c54e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixos-hardware",
+        "type": "github"
+      }
+    },
+    "nixos-unstable": {
+      "locked": {
+        "lastModified": 1601171649,
+        "narHash": "sha256-G3RUAi2DUq6r3ntASLS+LZC/Eamot55W1+xmBOgEh3M=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "84d74ae9c9cbed73274b8e4e00be14688ffc93fe",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "emacs-overlay": "emacs-overlay",
+        "home-manager": "home-manager",
+        "nixos": "nixos",
+        "nixos-hardware": "nixos-hardware",
+        "nixos-unstable": "nixos-unstable"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
--- a/flake.nix
+++ b/flake.nix
@ -0,0 +1,105 @@
+# flake.nix --- the heart of my dotfiles
+#
+# Author:  Henrik Lissner <henrik@lissner.net>
+# URL:     https://github.com/hlissner/dotfiles
+# License: MIT
+#
+# Welcome to ground zero. Where the whole flake gets set up and all its modules
+# are loaded.
+
+{
+  description = "A grossly incandescent nixos config.";
+
+  inputs = 
+    {
+      # Core dependencies
+      nixos.url          = "nixpkgs/nixos-20.09";
+      nixos-unstable.url = "nixpkgs/nixos-unstable";
+      home-manager.url   = "github:rycee/home-manager/master";
+      home-manager.inputs.nixpkgs.follows = "nixos-unstable";
+
+      # Extras
+      emacs-overlay.url  = "github:nix-community/emacs-overlay";
+      nixos-hardware.url = "github:nixos/nixos-hardware";
+    };
+
+  outputs = inputs @ { self, nixos, nixos-unstable, home-manager, ... }:
+    let
+      inherit (builtins) baseNameOf;
+      inherit (lib) nixosSystem mkIf removeSuffix attrNames attrValues;
+      inherit (lib.my) mapModules mapModulesRec mapModulesRec';
+
+      system = "x86_64-linux";
+
+      lib = nixos.lib.extend
+        (self: super: { my = import ./lib { inherit pkgs; lib = self; }; });
+
+      mkPkgs = pkgs: extraOverlays: import pkgs {
+        inherit system;
+        config.allowUnfree = true;  # forgive me Stallman senpai
+        overlays = extraOverlays ++ (attrValues self.overlays);
+      };
+      pkgs     = mkPkgs nixos [ self.overlay ];
+      unstable = mkPkgs nixos-unstable [];
+    in {
+      overlay =
+        final: prev: {
+          inherit unstable;
+          user = self.packages."${system}";
+        };
+
+      overlays =
+        mapModules (toString ./overlays) import;
+
+      packages."${system}" =
+        mapModules (toString ./packages)
+          (p: pkgs.callPackage p {});
+
+      nixosModules =
+        mapModulesRec (toString ./modules) import;
+
+      nixosConfigurations =
+        mapModules (toString ./hosts)
+          (modulePath: nixosSystem {
+            inherit system;
+            specialArgs = { inherit lib inputs; };
+            modules = [
+              # Common config for all nixos machines; and to ensure the flake
+              # operates soundly
+              {
+                networking.hostName = removeSuffix ".nix" (baseNameOf modulePath);
+                environment.variables.NIXPKGS_ALLOW_UNFREE = "1";
+                nixpkgs.pkgs = pkgs;
+                nix = {
+                  package = unstable.nixFlakes;
+                  extraOptions = "experimental-features = nix-command flakes";
+                  nixPath = [
+                    "nixpkgs=${nixos}"
+                    "nixpkgs-overlays=${toString ./.}/overlays"
+                  ];
+                  binaryCaches = [
+                    "https://cache.nixos.org/"
+                    "https://nix-community.cachix.org"
+                  ];
+                  binaryCachePublicKeys = [
+                    "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+                  ];
+                  autoOptimiseStore = true;
+                  useSandbox = true;
+                };
+                system.configurationRevision = mkIf (self ? rev) self.rev;
+                system.stateVersion = "20.09";
+              }
+
+              # I use home-manager to deploy files to $HOME; little else
+              home-manager.nixosModules.home-manager
+
+              # All my personal modules
+              { imports = mapModulesRec' (toString ./modules) import; }
+
+              ./hosts       # config common to all hosts
+              modulePath    # host-specific config
+            ];
+          });
+    };
+}
--- a/hosts/README.org
+++ b/hosts/README.org
@ -0,0 +1,9 @@
+#+TITLE: Host Configurations
+
+* Systems
+ kuro
+ shiro
+ ao
+ aka
+ aijiro
+ unlisted: 100+ linodes, 7 VMs
--- a/hosts/aka/default.nix
+++ b/hosts/aka/default.nix
@ -1,24 +0,0 @@
-# My HTPC. Mostly so family can organize their media collection.
-
-{ config, lib, ... }:
-{
-  imports = [
-    ../personal.nix   # common settings
-    ./hardware-configuration.nix
-  ];
-
-  modules = {
-    shell.zsh.enable = true;
-    services.calibre.enable = true;
-    services.jellyfin.enable = true;
-    services.ssh.enable = true;
-    services.syncthing.enable = true;
-  };
-
-  my.zsh.rc = lib.readFile <modules/themes/aquanaut/zsh/prompt.zsh>;
-
-  networking.networkmanager.enable = true;
-  time.timeZone = "America/Toronto";
-
-  services.calibre-server.calibre-server = "/data/books";
-}
--- a/hosts/aka/hardware-configuration.nix
+++ b/hosts/aka/hardware-configuration.nix
@ -1,32 +0,0 @@
-{ config, lib, ... }:
-{
-  imports = [
-    <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
-  ];
-
-  boot.initrd.availableKernelModules = [ "ohci_pci" "ehci_pci" "ahci" "firewire_ohci" "usb_storage" "usbhid" "sd_mod" "sr_mod" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" "wl" ];
-  boot.extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
-
-  ## CPU
-  nix.maxJobs = lib.mkDefault 2;
-
-  ## Networking
-  networking.useDHCP = false;
-  networking.interfaces.enp0s10.useDHCP = true;
-
-  ## Harddrives
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-label/nixos";
-      fsType = "ext4";
-      options = [ "noatime" ];
-    };
-    "/boot" = {
-      device = "/dev/disk/by-label/boot";
-      fsType = "vfat";
-    };
-  };
-  swapDevices = [{ device = "/dev/disk/by-label/swap"; }];
-}
--- a/hosts/ao/README.org
+++ b/hosts/ao/README.org
@ -0,0 +1 @@
+#+TITLE: Ao
--- a/hosts/ao/default.nix
+++ b/hosts/ao/default.nix
@ -1,40 +1,37 @@
 # Ao -- my home development and user-facing server

-{ pkgs, config, lib, ... }:
-{
-  imports = [
-    ../personal.nix
-    ./hardware-configuration.nix
-  ];
+{ config, lib, ... }:

+with lib.my;
+{
+  imports = [ ./hardware-configuration.nix ];
+
+  ## Modules
  modules = {
    shell.git.enable = true;
    shell.zsh.enable = true;
    services.ssh.enable = true;
-    services.nginx.enable = true;
-    services.gitea.enable = true;
-    services.syncthing.enable = true;
+    # services.nginx.enable = true;
+    # services.gitea.enable = true;
+    # services.syncthing.enable = true;
+
+    themes.fluorescence.enable = true;
  };

-  my.zsh.rc = lib.readFile <modules/themes/aquanaut/zsh/prompt.zsh>;

+  ## Local config
+  boot.loader.systemd-boot.enable = true;
  networking.networkmanager.enable = true;
-  time.timeZone = "America/Toronto";

  # nginx hosts
  services.nginx = {
-    user = config.my.username;
+    user = config.user.name;
    virtualHosts = {
      "v0.io" = {
        default = true;
        enableACME = true;
        forceSSL = true;
-        root = "/home/${config.my.username}/www/v0.io";
-      };
-      "dl.v0.io" = {
-        enableACME = true;
-        addSSL = true;
-        root = "/home/${config.my.username}/www/dl.v0.io";
+        root = "${homeDir}/www/v0.io";
        locations."~* \.(?:ico|css|js|gif|jpe?g|png|mp4)$".extraConfig = ''
          expires 30d;
          add_header Pragma public;
@ -46,55 +43,56 @@
        forceSSL = true;
        locations."/".proxyPass = http://127.0.0.1:3000;
      };
-      "tv.v0.io" = {
-        http2 = true; # more performant for streaming
-        enableACME = true;
-        forceSSL = true;
-        extraConfig = ''
-          add_header Content-Security-Policy "default-src https: data: blob:; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' https://www.gstatic.com/cv/js/sender/v1/cast_sender.js; worker-src 'self' blob:; connect-src 'self'; object-src 'none'; frame-ancestors 'self'";
+      # "tv.v0.io" = {
+      #   http2 = true; # more performant for streaming
+      #   enableACME = true;
+      #   forceSSL = true;
+      #   extraConfig = ''
+      #     add_header Content-Security-Policy "default-src https: data: blob:; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' https://www.gstatic.com/cv/js/sender/v1/cast_sender.js; worker-src 'self' blob:; connect-src 'self'; object-src 'none'; frame-ancestors 'self'";

-          # Some players don't reopen a socket and playback stops totally
-          # instead of resuming after an extended pause
-          send_timeout 100m;
+      #     # Some players don't reopen a socket and playback stops totally
+      #     # instead of resuming after an extended pause
+      #     send_timeout 100m;

-          # Intentionally not hardened for security for player support and
-          # encryption video streams has a lot of overhead with something like
-          # AES-256-GCM-SHA384.
-          ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
+      #     # Intentionally not hardened for security for player support and
+      #     # encryption video streams has a lot of overhead with something like
+      #     # AES-256-GCM-SHA384.
+      #     ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
+      #     ssl_stapling on;
+      #     ssl_stapling_verify on;

-          ssl_stapling on;
-          ssl_stapling_verify on;
+      #     # Forward real ip and host to Plex
+      #     proxy_set_header Referer $server_addr;
+      #     proxy_set_header Origin $server_addr;

-          # Forward real ip and host to Plex
-          proxy_set_header Referer $server_addr;
-          proxy_set_header Origin $server_addr;
-
-          # Security / XSS Mitigation Headers
-          add_header X-Frame-Options "SAMEORIGIN";
-          add_header X-XSS-Protection "1; mode=block";
-          add_header X-Content-Type-Options "nosniff";
-        '';
-        # locations."= /".return = "302 https://tv.v0.io/web/index.html";
-        locations."/socket" = {
-          proxyPass = "http://192.168.1.13:8096";
-          proxyHttpVersion = "1.1";
-          # Buffering off send to the client as soon as the data is received
-          # from JellyFin.
-          proxyBuffering = "off";
-        };
-        locations."/" = {
-          proxyWebsockets = true;
-          proxyPass = "http://192.168.1.13:8096";
-        };
-      };
+      #     # Security / XSS Mitigation Headers
+      #     add_header X-Frame-Options "SAMEORIGIN";
+      #     add_header X-XSS-Protection "1; mode=block";
+      #     add_header X-Content-Type-Options "nosniff";
+      #   '';
+      #   # locations."= /".return = "302 https://tv.v0.io/web/index.html";
+      #   locations."/socket" = {
+      #     proxyPass = "http://192.168.1.13:8096";
+      #     proxyHttpVersion = "1.1";
+      #     # Buffering off send to the client as soon as the data is received
+      #     # from JellyFin.
+      #     proxyBuffering = "off";
+      #   };
+      #   locations."/" = {
+      #     proxyWebsockets = true;
+      #     proxyPass = "http://192.168.1.13:8096";
+      #   };
+      # };
    };
  };

-  security.acme.certs = {
-    "v0.io".email = config.my.email;
-    "dl.v0.io".email = config.my.email;
-    "git.v0.io".email = config.my.email;
-    "tv.v0.io".email = config.my.email;
+  security.acme = {
+    acceptTerms = true;
+    certs = let email = "henrik@lissner.net"; in {
+      "v0.io".email = email;
+      "git.v0.io".email = email;
+      # "tv.v0.io".email = email;
+    };
  };

  services.gitea = {
--- a/hosts/ao/hardware-configuration.nix
+++ b/hosts/ao/hardware-configuration.nix
@ -1,13 +1,13 @@
-{ config, lib, ... }:
+{ config, lib, modulesPath, ... }:
 {
-  imports = [
-    <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
-  ];
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];

-  boot.initrd.availableKernelModules = [ "ohci_pci" "ehci_pci" "ahci" "firewire_ohci" "usb_storage" "usbhid" "sd_mod" "sr_mod" "sdhci_pci" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" "wl" ];
-  boot.extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
+  boot = {
+    initrd.availableKernelModules = [ "ohci_pci" "ehci_pci" "ahci" "firewire_ohci" "usb_storage" "usbhid" "sd_mod" "sr_mod" "sdhci_pci" ];
+    initrd.kernelModules = [ ];
+    kernelModules = [ "kvm-intel" "wl" ];
+    extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
+  };

  ## CPU
  nix.maxJobs = lib.mkDefault 2;
--- a/hosts/default.nix
+++ b/hosts/default.nix
@ -0,0 +1,71 @@
+# hosts/default.nix
+#
+# Loads config common to all hosts.
+
+{ config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+{
+  ## Some reasonable, global defaults
+  # This is here to appease 'nix flake check' for generic hosts with no
+  # hardware-configuration.nix or fileSystem config.
+  fileSystems."/".device = "/dev/disk/by-label/nixos";
+
+  boot.loader = {
+    efi.canTouchEfiVariables = true;
+    systemd-boot.configurationLimit = 10;
+  };
+
+  # Just the bear necessities...
+  environment.systemPackages = with pkgs; [
+    unstable.cached-nix-shell
+    coreutils
+    git
+    vim
+    wget
+    gnumake
+  ];
+
+  networking.firewall.enable = true;
+  networking.hosts =
+    let hostConfig = {
+          "192.168.1.2"  = [ "ao" ];
+          "192.168.1.3"  = [ "aka" ];
+          "192.168.1.10" = [ "kuro" ];
+          "192.168.1.11" = [ "shiro" ];
+          "192.168.1.12" = [ "midori" ];
+        };
+        hosts = flatten (attrValues hostConfig);
+        hostName = config.networking.hostName;
+    in mkIf (builtins.elem hostName hosts) hostConfig;
+
+  # Use the latest kernel
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
+
+  ## Location config -- since Toronto is my 127.0.0.1
+  time.timeZone = lib.mkDefault "America/Toronto";
+  i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
+  # For redshift, mainly
+  location = (if config.time.timeZone == "America/Toronto" then {
+    latitude = 43.70011;
+    longitude = -79.4163;
+  } else if config.time.timeZone == "Europe/Copenhagen" then {
+    latitude = 55.88;
+    longitude = 12.5;
+  } else {});
+
+
+  ## System security tweaks
+  boot.tmpOnTmpfs = true;
+  security.hideProcessInformation = true;
+  security.protectKernelImage = true;
+  # Fix a security hole in place for backwards compatibility. See desc in
+  # nixpkgs/nixos/modules/system/boot/loader/systemd-boot/systemd-boot.nix
+  boot.loader.systemd-boot.editor = false;
+
+  # Change me later!
+  user.initialPassword = "nix";
+  users.users.root.initialPassword = "nix";
+}
--- a/hosts/kuro/README.org
+++ b/hosts/kuro/README.org
@ -0,0 +1,68 @@
+#+TITLE: Kuro
+#+DATE:  September 13, 2020
+
+* Overview
+
+* Specs
+| CPU   | [[https://www.newegg.ca/amd-ryzen-9-3900x/p/N82E16819113103][AMD Ryzen 9 3900X 12-core, 24-thread]]    |
+| MOBO  | [[https://www.newegg.ca/gigabyte-b550-aorus-elite/p/N82E16813145214?Item=N82E16813145214&IsFeedbackTab=true#scrollFullInfo][GIGABYTE B550 AORUS Elite]]               |
+| COOL  | [[https://www.newegg.ca/cooler-master-hyper-212-evo-rr-212e-20pk-r2/p/N82E16835103099][Cooler Master Hyper 212 Evo]]             |
+| GPU   | EVGA GeForce 680 GTX SC                 |
+| RAM   | [[https://www.newegg.ca/g-skill-64gb-288-pin-ddr4-sdram/p/N82E16820374003?Description=G.SKILL%20Ripjaws%20V%20Series%2064gb&cm_re=G.SKILL_Ripjaws%20V%20Series%2064gb-_-20-374-003-_-Product][G.SKILL Ripjaws V Series 64GB (2x 32GB)]] |
+| HDD   | [[https://www.newegg.ca/samsung-970-evo-plus-500gb/p/N82E16820147742?Description=samsung%20970%20evo%20plus&cm_re=samsung_970%20evo%20plus-_-20-147-742-_-Product][Samsung 970 EVO Plus 500GB NVMe M2]]      |
+| HDD   | ST31000340NS 1TB (2x)                   |
+| KBD   | ErgoDox-EZ                              |
+| MOUSE | Anker Wireless Vertical Mouse           |
+
+* Installation
+** Set up root file system
+#+BEGIN_SRC sh
+# EVO Plus 500gb
+parted /dev/nvme0n1 -- mklabel gpt
+parted /dev/nvme0n1 -- mkpart ESP fat32 1MiB 512MiB
+parted /dev/nvme0n1 -- mkpart primary 512MiB 200GiB
+parted /dev/nvme0n1 -- mkpart primary 200GiB 100%
+parted /dev/nvme0n1 -- set 1 boot on
+mkfs.fat -F32 -n BOOT /dev/nvme0n1p1
+mkfs.ext4 -L nixos /dev/nvme0n1p2
+mkfs.ext4 -L home /dev/nvme0n1p3
+#+END_SRC
+
+** Set up VM SSDs
+#+BEGIN_SRC shell
+# 2x SSDs for VMs
+parted /dev/sdc -- mklabel gpt
+parted /dev/sde -- mklabel gpt
+#+END_SRC
+
+** Set up backup file system
+#+BEGIN_SRC sh
+# 2x 1TB mirrored backup
+zpool create -R /mnt \
+    -O mountpoint=none \
+    -O xattr=sa \
+    -O atime=off \
+    -O compression=lz4 \
+    -O recordsize=1M \
+    -o ashift=9 \
+    usr mirror /dev/sda /dev/sdb
+
+# aux
+zfs create -o mountpoint=legacy usr/media
+zfs create -o mountpoint=legacy usr/backup
+zfs create -o mountpoint=legacy -o recordsize=128K usr/share
+zfs create -o mountpoint=legacy -o recordsize=128K usr/local
+#+END_SRC
+
+** Mount drives
+#+BEGIN_SRC sh
+mount /dev/nvme0n1p2 /mnt
+
+mkdir -p /mnt/{home,boot,usr/{backup,media,share}}
+mount /dev/nvme0n1p1 /mnt/boot
+mount /dev/nvme0n1p3 /mnt/home
+mount -t zfs {usr,/mnt/usr}/backup
+mount -t zfs {usr,/mnt/usr}/media
+mount -t zfs {usr,/mnt/usr}/share
+mount -t zfs {usr,/mnt/usr}/local
+#+END_SRC
--- a/hosts/kuro/default.nix
+++ b/hosts/kuro/default.nix
@ -1,77 +1,79 @@
-# Kuro -- my desktop
-
-{ pkgs, options, config, ... }:
+{ ... }:
 {
-  imports = [
-    ../personal.nix   # common settings
-    ./hardware-configuration.nix
-  ];
+  imports = [ ./hardware-configuration.nix ];

+  ## Modules
  modules = {
    desktop = {
      bspwm.enable = true;
-
-      apps.rofi.enable = true;
-      apps.discord.enable = true;
-      # apps.skype.enable = true;
-      apps.daw.enable = true;        # making music
-      apps.graphics.enable = true;   # raster/vector/sprites
-      apps.recording.enable = true;  # recording screen/audio
-      apps.vm.enable = true;         # virtualbox for testing
-
-      term.default = "xst";
-      term.st.enable = true;
-
-      browsers.default = "firefox";
-      browsers.firefox.enable = true;
-      # browsers.qutebrowser.enable = true;
-      # browsers.vimb.enable = true;
-
-      # gaming.emulators.psx.enable = true;
-      gaming.steam.enable = true;
+      apps = {
+        discord.enable = true;
+        rofi.enable = true;
+        # godot.enable = true;
+      };
+      browsers = {
+        default = "firefox";
+        firefox.enable = true;
+      };
+      gaming = {
+        steam.enable = true;
+        # emulators.enable = true;
+        # emulators.psx.enable = true;
+      };
+      media = {
+        daw.enable = true;
+        documents.enable = true;
+        graphics.enable = true;
+        mpv.enable = true;
+        recording.enable = true;
+        spotify.enable = true;
+      };
+      term = {
+        default = "xst";
+        st.enable = true;
+      };
+      vm = {
+        qemu.enable = true;
+      };
    };
-
    editors = {
-      default = "nvim";
+      default = "emacs -nw";
      emacs.enable = true;
      vim.enable = true;
    };
-
-    dev = {
-      cc.enable = true;
-      common-lisp.enable = true;
-      rust.enable = true;
-      node.enable = true;
-      # lua.enable = true;
-      # lua.love2d.enable = true;
+    hardware = {
+      audio.enable = true;
+      ergodox.enable = true;
+      fs = {
+        enable = true;
+        zfs.enable = true;
+        ssd.enable = true;
      };
-
-    media = {
-      mpv.enable = true;
-      spotify.enable = true;
+      nvidia.enable = true;
+      sensors.enable = true;
    };
-
    shell = {
      direnv.enable = true;
      git.enable    = true;
      gnupg.enable  = true;
-      # weechat.enable = true;
      pass.enable   = true;
      tmux.enable   = true;
-      # ranger.enable = true;
      zsh.enable    = true;
    };
-
    services = {
-      # syncthing.enable = true;
-      # docker.enable = true;
+      ssh.enable = true;
    };
-
-    # themes.aquanaut.enable = true;
    themes.fluorescence.enable = true;
  };

+
+  ## Local config
  programs.ssh.startAgent = true;
+
+  boot.loader.systemd-boot.enable = true;
  networking.networkmanager.enable = true;
-  time.timeZone = "America/Toronto";
+  # The global useDHCP flag is deprecated, therefore explicitly set to false
+  # here. Per-interface useDHCP will be mandatory in the future, so this
+  # generated config replicates the default behaviour.
+  networking.useDHCP = false;
 }
--- a/hosts/kuro/hardware-configuration.nix
+++ b/hosts/kuro/hardware-configuration.nix
@ -1,54 +1,54 @@
-{ config, pkgs, lib, ... }:
+{ config, lib, pkgs, modulesPath, ... }:
+
 {
-  imports = [
-    <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
+  imports = [ "${modulesPath}/installer/scan/not-detected.nix" ];
+
+  boot = {
+    initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" ];
+    initrd.kernelModules = [];
+    extraModulePackages = [];
+    kernelModules = [
+      "kvm-amd"
+      "asix"  # REVIEW Remove me when 5.9 kernel is available
    ];
+    kernelParams = [
+      # HACK Disables fixes for spectre, meltdown, L1TF and a number of CPU
+      #      vulnerabilities. This is not a good idea for mission critical or
+      #      server/headless builds, but on my lonely home system I prioritize
+      #      raw performance over security.  The gains are minor.
+      "mitigations=off"
+      # Limit ZFS cache to 8gb. Sure, this system has 64gb, but I don't want
+      # this biting me when I'm running multiple VMs.
+      "zfs.zfs_arc_max=8589934592"
+    ];
+  };

-  boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usbhid" "uas" "usb_storage" "sd_mod" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ ];
-
-  ## CPU
-  nix.maxJobs = lib.mkDefault 8;
+  # CPU
+  nix.maxJobs = lib.mkDefault 16;
  powerManagement.cpuFreqGovernor = "performance";
-  hardware.cpu.intel.updateMicrocode = true;
+  hardware.cpu.amd.updateMicrocode = true;

-  ## SSDs
-  services.fstrim.enable = true;
+  # Displays
+  services.xserver = {
+    monitorSection = ''
+      VendorName  "Unknown"
+      ModelName   "DELL U2515H"
+      HorizSync   30.0 - 113.0
+      VertRefresh 56.0 - 86.0
+      Option      "DPMS"
+    '';
+    screenSection = ''
+      Option "metamodes" "HDMI-0: nvidia-auto-select +1920+0, DVI-I-1: nvidia-auto-select +0+180, DVI-D-0: nvidia-auto-select +4480+180"
+      Option "SLI" "Off"
+      Option "MultiGPU" "Off"
+      Option "BaseMosaic" "off"
+      Option "Stereo" "0"
+      Option "nvidiaXineramaInfoOrder" "DFP-1"
+    '';
+  };

-  ## Ergodox
-  my.packages = [ pkgs.teensy-loader-cli ];
-  my.alias.teensyload = "sudo teensy-loader-cli -w -v --mcu=atmega32u4";
-  # Make ralt the compose key, so ralt+a+a = å or ralt+o+/ = ø
-  services.xserver.xkbOptions = "compose:ralt";
-
-  ## GPU
-  services.xserver.videoDrivers = [ "nvidia" ];
-  hardware.opengl.enable = true;
-  # Respect XDG conventions, damn it!
-  environment.systemPackages = with pkgs; [
-    (writeScriptBin "nvidia-settings" ''
-      #!${stdenv.shell}
-      mkdir -p "$XDG_CONFIG_HOME/nvidia"
-      exec ${config.boot.kernelPackages.nvidia_x11.settings}/bin/nvidia-settings --config="$XDG_CONFIG_HOME/nvidia/settings"
-    '')
-  ];
-
-  ## Tablet
-  # For my intuos4 pro. Doesn't work for cintiqs.
-  services.xserver.wacom.enable = true;
-  # TODO Move this to udev
-  # system.userActivationScripts.wacom.text = ''
-  #   # lock tablet to main display
-  #   if xinput list --id-only "Wacom Intuos Pro S Pen stylus" 2>&1 >/dev/null; then
-  #     xinput map-to-output $(xinput list --id-only "Wacom Intuos Pro S Pen stylus") DVI-I-1
-  #     xinput map-to-output $(xinput list --id-only "Wacom Intuos Pro S Pen eraser") DVI-I-1
-  #     xinput map-to-output $(xinput list --id-only "Wacom Intuos Pro S Pen cursor") DVI-I-1
-  #   fi
-  # '';
-
-  ### Harddrives
+  # Storage
+  networking.hostId = "edd9f26b";  # required by zfs
  fileSystems = {
    "/" = {
      device = "/dev/disk/by-label/nixos";
@ -59,21 +59,27 @@
      device = "/dev/disk/by-label/BOOT";
      fsType = "vfat";
    };
-    "/mnt/projects" = {
-      device = "/dev/disk/by-label/projects";
+    "/home" = {
+      device = "/dev/disk/by-label/home";
      fsType = "ext4";
      options = [ "noatime" ];
    };
-    "/mnt/archive" = {
-      device = "/dev/disk/by-label/archive";
-      fsType = "ext4";
-      options = [ "noatime" ];
+    "/usr/backup" = {
+      device = "usr/backup";
+      fsType = "zfs";
    };
-    "/mnt/local" = {
-      device = "/dev/disk/by-label/local";
-      fsType = "ext4";
-      options = [ "noatime" ];
+    "/usr/media" = {
+      device = "usr/media";
+      fsType = "zfs";
+    };
+    "/usr/local" = {
+      device = "usr/local";
+      fsType = "zfs";
+    };
+    "/usr/share" = {
+      device = "usr/share";
+      fsType = "zfs";
    };
  };
-  swapDevices = [ { device = "/dev/disk/by-label/swap"; } ];
+  swapDevices = [];
 }
--- a/hosts/linode.nix
+++ b/hosts/linode.nix
@ -14,10 +14,8 @@
 #      curl $url | dd of=/dev/sda
 #
 # 4. Install these dotfiles with
-#      git clone https://github.com/hlissner/dotfiles ~/.dotfiles
-#      ln -s ~/.dotfiles /etc/dotfiles
-#      cd ~/.dotfiles
-#      mk install-linode
+#      git clone https://github.com/hlissner/dotfiles ~/.config/dotfiles
+#      nixos-install --root "$(PREFIX)" --flake ~/.config/dotfiles#linode
 #
 # 4. Create a configuration profile:
 #    - Kernel: GRUB 2
@ -28,16 +26,27 @@
 # 5. Reboot into profile.

 { config, lib, pkgs, ... }:
+
+let
+  inherit (lib) filter pathExists;
+in
 {
+  imports = filter pathExists ["/etc/nixos/configuration.nix"];
+
  environment.systemPackages =
    with pkgs; [ inetutils mtr sysstat git ];

-  imports = [
-    <modules/editors/vim.nix>
-    <modules/shell/git.nix>
-    <modules/shell/zsh.nix>
-    <modules/services/ssh.nix>
-  ];
+  modules = {
+    # editors = {
+    #   default = "nvim";
+    #   vim.enable = true;
+    # };
+    shell = {
+      # git.enable = true;
+      zsh.enable = true;
+    };
+    services.ssh.enable = true;
+  };

  # GRUB
  boot = {
@ -58,7 +67,9 @@
    };
  };

-  networking.useDHCP = false;
-  networking.usePredictableInterfaceNames = false;
-  networking.interfaces.eth0.useDHCP = true;
+  networking = {
+    useDHCP = false;
+    usePredictableInterfaceNames = false;
+    interfaces.eth0.useDHCP = true;
+  };
 }
--- a/hosts/personal.nix
+++ b/hosts/personal.nix
@ -1,82 +0,0 @@
-# hosts/personal.nix --- settings common to my personal systems
-
-{ config, lib, pkgs, ... }:
-{
-  # Support for more filesystems
-  environment.systemPackages = with pkgs; [
-    exfat
-    ntfs3g
-    hfsprogs
-  ];
-
-  # Nothing in /tmp should survive a reboot
-  boot.tmpOnTmpfs = true;
-  # Use simple bootloader; I prefer the on-demand BIOs boot menu
-  boot.loader = {
-    timeout = 1;
-    efi.canTouchEfiVariables = true;
-    systemd-boot = {
-      enable = true;
-      # Fix a security hole in place for backwards compatibility. See desc in
-      # nixpkgs/nixos/modules/system/boot/loader/systemd-boot/systemd-boot.nix
-      editor = false;
-      # Limit number of generations to display in boot menu
-      configurationLimit = 10;
-    };
-  };
-
-  ### Universal defaults
-  networking.firewall.enable = true;
-  networking.hosts = {
-    "192.168.1.2"  = [ "ao" ];
-    "192.168.1.3"  = [ "aka" ];
-    "192.168.1.10" = [ "kuro" ];
-    "192.168.1.11" = [ "shiro" ];
-    "192.168.1.12" = [ "midori" ];
-  };
-
-
-  ### A tidy $HOME is a tidy mind
-  # Obey XDG conventions;
-  my.home.xdg.enable = true;
-  environment.variables = {
-    # These are the defaults, but some applications are buggy when these lack
-    # explicit values.
-    XDG_CONFIG_HOME = "$HOME/.config";
-    XDG_CACHE_HOME  = "$HOME/.cache";
-    XDG_DATA_HOME   = "$HOME/.local/share";
-    XDG_BIN_HOME    = "$HOME/.local/bin";
-  };
-
-  # Conform more programs to XDG conventions. The rest are handled by their
-  # respective modules.
-  my.env = {
-    __GL_SHADER_DISK_CACHE_PATH = "$XDG_CACHE_HOME/nv";
-    CUDA_CACHE_PATH = "$XDG_CACHE_HOME/nv";
-    HISTFILE = "$XDG_DATA_HOME/bash/history";
-    INPUTRC = "$XDG_CACHE_HOME/readline/inputrc";
-    LESSHISTFILE = "$XDG_CACHE_HOME/lesshst";
-    WGETRC = "$XDG_CACHE_HOME/wgetrc";
-  };
-
-  # Prevents ~/.esd_auth files by disabling the esound protocol module for
-  # pulseaudio, which I likely don't need. Is there a better way?
-  hardware.pulseaudio.configFile =
-    let paConfigFile =
-          with pkgs; runCommand "disablePulseaudioEsoundModule"
-            { buildInputs = [ pulseaudio ]; } ''
-              mkdir "$out"
-              cp ${pulseaudio}/etc/pulse/default.pa "$out/default.pa"
-              sed -i -e 's|load-module module-esound-protocol-unix|# ...|' "$out/default.pa"
-            '';
-      in lib.mkIf config.hardware.pulseaudio.enable
-        "${paConfigFile}/default.pa";
-
-  # Clean up leftovers, as much as we can
-  system.userActivationScripts.cleanupHome = ''
-    pushd /home/${config.my.username}
-    rm -rf .compose-cache .nv .pki .dbus .fehbg
-    [ -s .xsession-errors ] || rm -f .xsession-errors*
-    popd
-  '';
-}
--- a/hosts/shiro/README.org
+++ b/hosts/shiro/README.org
@ -0,0 +1,9 @@
+#+TITLE: Shiro
+#+DATE:  September 13, 2020
+
+* Overview
+
+* Specs
+Dell 13" 9370
+
+* Installation
--- a/hosts/shiro/default.nix
+++ b/hosts/shiro/default.nix
@ -1,40 +1,43 @@
 # Shiro -- my laptop

-{ pkgs, ... }:
+{ ... }:
 {
-  imports = [
-    ../personal.nix   # common settings
-    ./hardware-configuration.nix
-  ];
+  imports = [ ./hardware-configuration.nix ];

+  ## Modules
  modules = {
    desktop = {
      bspwm.enable = true;
-
-      apps.rofi.enable = true;
-      apps.discord.enable = true;
-      # apps.skype.enable = true;
-      apps.daw.enable = true;        # making music
-      apps.graphics.enable = true;   # raster/vector/sprites
-      apps.recording.enable = true;  # recording screen/audio
-      # apps.vm.enable = true;       # virtualbox for testing
-
-      term.default = "xst";
-      term.st.enable = true;
-
-      browsers.default = "firefox";
-      browsers.firefox.enable = true;
-
-      # gaming.emulators.psx.enable = true;
-      # gaming.steam.enable = true;
+      apps = {
+        discord.enable = true;
+        rofi.enable = true;
+        # skype.enable = true;
+      };
+      browsers = {
+        default = "firefox";
+        firefox.enable = true;
+      };
+      media = {
+        # daw.enable = true;
+        documents.enable = true;
+        graphics.enable = true;
+        mpv.enable = true;
+        recording.enable = true;
+        spotify.enable = true;
+      };
+      term = {
+        default = "xst";
+        st.enable = true;
+      };
+      vm = {
+        # virtualbox.enable = true;
+      };
    };
-
    editors = {
-      default = "nvim";
+      default = "emacs -nw";
      emacs.enable = true;
      vim.enable = true;
    };
-
    dev = {
      # cc.enable = true;
      # common-lisp.enable = true;
@ -42,12 +45,13 @@
      # lua.enable = true;
      # lua.love2d.enable = true;
    };
-
-    media = {
-      mpv.enable = true;
-      spotify.enable = true;
+    hardware = {
+      audio.enable = true;
+      fs = {
+        enable = true;
+        ssd.enable = true;
+      };
    };
-
    shell = {
      direnv.enable = true;
      git.enable = true;
@ -58,25 +62,23 @@
      # ranger.enable = true;
      zsh.enable = true;
    };
+    hardware = {

-    services = {
-      syncthing.enable = true;
    };
-
-    # themes.aquanaut.enable = true;
+    services = {
+      # syncthing.enable = true;
+      ssh.enable = true;
+    };
    themes.fluorescence.enable = true;
  };

+
+  ## Local config
  programs.ssh.startAgent = true;
+
+  boot.loader.systemd-boot.enable = true;
  networking.wireless.enable = true;
  hardware.opengl.enable = true;

-  time.timeZone = "America/Toronto";
  # time.timeZone = "Europe/Copenhagen";
-
-  # Optimize power use
-  environment.systemPackages = [ pkgs.acpi ];
-  powerManagement.powertop.enable = true;
-  # Monitor backlight control
-  programs.light.enable = true;
 }
--- a/hosts/shiro/hardware-configuration.nix
+++ b/hosts/shiro/hardware-configuration.nix
@ -1,30 +1,37 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, inputs, modulesPath, ... }:

 {
  imports = [
-    <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
-    (let nixos-hardware =
-           builtins.fetchTarball
-             https://github.com/NixOS/nixos-hardware/archive/master.tar.gz;
-     in "${nixos-hardware}/dell/xps/13-9370")
+    (modulesPath + "/installer/scan/not-detected.nix")
+    inputs.nixos-hardware.nixosModules.dell-xps-13-9370
  ];

-  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "rtsx_pci_sdmmc" ];
-  boot.initrd.kernelModules = [ "dm-snapshot" ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ ];
+  boot = {
+    initrd.availableKernelModules = [ "xhci_pci" "nvme" "rtsx_pci_sdmmc" ];
+    initrd.kernelModules = [ "dm-snapshot" ];
+    kernelModules = [ "kvm-intel" ];
+    extraModulePackages = [ ];
+    # HACK Disables fixes for spectre, meltdown, L1TF and a number of CPU
+    #      vulnerabilities. This is not a good idea for mission critical or
+    #      server/headless builds, but on my lonely home system I prioritize raw
+    #      performance over security.  The gains are minor.
+    kernelParams = [ "mitigations=off" ];
+  };

-  ## CPU
+  # CPU
  nix.maxJobs = lib.mkDefault 8;
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  hardware.cpu.intel.updateMicrocode = true;

-  ## SSDs
-  # services.fstrim.enable = true;
+  # Power management
+  environment.systemPackages = [ pkgs.acpi ];
+  powerManagement.powertop.enable = true;
+  programs.light.enable = true;  # Monitor backlight control

+  # Storage
  fileSystems = {
    "/" = {
      device = "/dev/disk/by-label/nixos";
@ -42,7 +49,7 @@
    };
  };
  swapDevices = [ { device = "/dev/disk/by-label/swap"; }];
-  # Encrypted /home
+
  boot.initrd.luks.devices.home = {
    device = "/dev/nvme0n1p8";
    preLVM = true;
--- a/lib/attrs.nix
+++ b/lib/attrs.nix
@ -0,0 +1,26 @@
+{ lib, ... }:
+
+with builtins;
+with lib;
+rec {
+  # attrsToList
+  attrsToList = attrs:
+    mapAttrsToList (name: value: { inherit name value; }) attrs;
+
+  # mapFilterAttrs ::
+  #   (name -> value -> bool)
+  #   (name -> value -> { name = any; value = any; })
+  #   attrs
+  mapFilterAttrs = pred: f: attrs: filterAttrs pred (mapAttrs' f attrs);
+
+  # Generate an attribute set by mapping a function over a list of values.
+  genAttrs' = values: f: listToAttrs (map f values);
+
+  # anyAttrs :: (name -> value -> bool) attrs
+  anyAttrs = pred: attrs:
+    any (attr: pred attr.name attr.value) (attrsToList attrs);
+
+  # countAttrs :: (name -> value -> bool) attrs
+  countAttrs = pred: attrs:
+    count (attr: pred attr.name attr.value) (attrsToList attrs);
+}
--- a/lib/default.nix
+++ b/lib/default.nix
@ -0,0 +1,18 @@
+{ lib, pkgs, ... }:
+
+let
+  inherit (lib) makeExtensible attrValues foldr;
+  inherit (modules) mapModules;
+
+  modules = import ./modules.nix {
+    inherit lib;
+    self.attrs = import ./attrs.nix { inherit lib; self = {}; };
+  };
+
+  mylib = makeExtensible (self:
+    with self; mapModules (toString ./.)
+      (file: import file { inherit self lib pkgs; }));
+in
+mylib.extend
+  (self: super:
+    foldr (a: b: a // b) {} (attrValues super))
--- a/lib/modules.nix
+++ b/lib/modules.nix
@ -0,0 +1,53 @@
+{ self, lib, ... }:
+
+let
+  inherit (builtins) attrValues readDir pathExists concatLists;
+  inherit (lib) id mapAttrsToList filterAttrs hasPrefix hasSuffix nameValuePair removeSuffix;
+  inherit (self.attrs) mapFilterAttrs;
+in
+rec {
+  mapModules = dir: fn:
+    mapFilterAttrs
+      (n: v:
+        v != null &&
+        !(hasPrefix "_" n))
+      (n: v:
+        let path = "${toString dir}/${n}"; in
+        if v == "directory" && pathExists "${path}/default.nix"
+        then nameValuePair n (fn path)
+        else if v == "regular" &&
+                n != "default.nix" &&
+                hasSuffix ".nix" n
+        then nameValuePair (removeSuffix ".nix" n) (fn path)
+        else nameValuePair "" null)
+      (readDir dir);
+
+  mapModules' = dir: fn:
+    attrValues (mapModules dir fn);
+
+  mapModulesRec = dir: fn:
+    mapFilterAttrs
+      (n: v:
+        v != null &&
+        !(hasPrefix "_" n))
+      (n: v:
+        let path = "${toString dir}/${n}"; in
+        if v == "directory"
+        then nameValuePair n (mapModulesRec path fn)
+        else if v == "regular" && n != "default.nix" && hasSuffix ".nix" n
+        then nameValuePair (removeSuffix ".nix" n) (fn path)
+        else nameValuePair "" null)
+      (readDir dir);
+
+  mapModulesRec' = dir: fn:
+    let
+      dirs =
+        mapAttrsToList
+          (k: _: "${dir}/${k}")
+          (filterAttrs
+            (n: v: v == "directory" && !(hasPrefix "_" n))
+            (readDir dir));
+      files = attrValues (mapModules dir id);
+      paths = files ++ concatLists (map (d: mapModulesRec' d id) dirs);
+    in map fn paths;
+}
--- a/lib/options.nix
+++ b/lib/options.nix
@ -0,0 +1,18 @@
+{ lib, ... }:
+
+let
+  inherit (lib) mkOption types;
+in
+rec {
+  mkOpt  = type: default:
+    mkOption { inherit type default; };
+
+  mkOpt' = type: default: description:
+    mkOption { inherit type default description; };
+
+  mkBoolOpt = default: mkOption {
+    inherit default;
+    type = types.bool;
+    example = true;
+  };
+}
--- a/lib/paths.nix
+++ b/lib/paths.nix
@ -0,0 +1,15 @@
+{ self, lib, ... }:
+
+with builtins;
+with lib;
+rec {
+  # ...
+  dotFiles   = toString ../.;
+  modulesDir = "${dotFiles}/modules";
+  configDir  = "${dotFiles}/config";
+  binDir     = "${dotFiles}/bin";
+  themeDir   = "${modulesDir}/themes";
+  homeDir = "/home/${let name = getEnv "USERNAME"; in
+                     if elem name [ "" "root" ]
+                     then "hlissner" else name}";
+}
--- a/modules/default.nix
+++ b/modules/default.nix
@ -1,96 +0,0 @@
-{ config, options, lib, ... }:
-with lib;
-let mkOptionStr = value: mkOption
-  { type = types.str;
-    default = value; };
-in {
-  imports = [
-    <home-manager/nixos>
-
-    ./desktop
-    ./dev
-    ./editors
-    ./media
-    ./services
-    ./shell
-    ./themes
-  ];
-
-  options = {
-    my = {
-      ## Personal details
-      username = mkOptionStr "hlissner";
-      email = mkOptionStr "henrik@lissner.net";
-
-      ## Convenience aliases
-      home = mkOption { type = options.home-manager.users.type.functor.wrapped; };
-      user = mkOption { type = types.submodule; };
-      packages = mkOption { type = with types; listOf package; };
-
-      ## Environment
-      env = mkOption {
-        type = with types; attrsOf (either (either str path) (listOf (either str path)));
-        apply = mapAttrs
-          (n: v: if isList v
-                 then concatMapStringsSep ":" (x: toString x) v
-                 else (toString v));
-      };
-
-      alias = mkOption {
-        type = with types; nullOr (attrsOf (nullOr (either str path)));
-      };
-      zsh = {
-        rc = mkOption {
-          type = types.lines;
-          default = "";
-          description = ''
-            Zsh lines to be written to $XDG_CONFIG_HOME/zsh/extra.zshrc and
-            sourced by $XDG_CONFIG_HOME/zsh/.zshrc
-          '';
-        };
-        env = mkOption {
-          type = types.lines;
-          default = "";
-          description = ''
-            Zsh lines to be written to $XDG_CONFIG_HOME/zsh/extra.zshenv and
-            sourced by $XDG_CONFIG_HOME/zsh/.zshenv
-          '';
-        };
-      };
-    };
-  };
-
-  config = {
-    ## Convenience aliases
-    home-manager.users.${config.my.username} = mkAliasDefinitions options.my.home;
-    users.users.${config.my.username} = mkAliasDefinitions options.my.user;
-    my.user.packages = config.my.packages;
-
-    ## PATH should always start with its old value
-    my.env.PATH = [ <bin> "$PATH" ];
-    environment.extraInit =
-      let exportLines = mapAttrsToList (n: v: "export ${n}=\"${v}\"") config.my.env;
-      in ''
-        export XAUTHORITY=/tmp/Xauthority
-        [ -e ~/.Xauthority ] && mv -f ~/.Xauthority "$XAUTHORITY"
-
-        ${concatStringsSep "\n" exportLines}
-      '';
-
-    # I avoid programs.zsh.*Init variables because they initialize too soon. My
-    # zsh config is particular about load order.
-    my.home.xdg.configFile = {
-      "zsh/extra.zshrc".text =
-        let aliasLines = mapAttrsToList (n: v: "alias ${n}=\"${v}\"") config.my.alias;
-        in ''
-           # This file is autogenerated, do not edit it!
-           ${concatStringsSep "\n" aliasLines}
-           ${config.my.zsh.rc}
-        '';
-      "zsh/extra.zshenv".text = ''
-        # This file is autogenerated, do not edit it!
-        ${config.my.zsh.env};
-      '';
-    };
-  };
-}
--- a/modules/desktop/apps/default.nix
+++ b/modules/desktop/apps/default.nix
@ -1,13 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./daw.nix
-    ./discord.nix
-    ./graphics.nix
-    ./recording.nix
-    ./rofi.nix
-    ./skype.nix
-    ./vm.nix
-  ];
-}
--- a/modules/desktop/apps/discord.nix
+++ b/modules/desktop/apps/discord.nix
@ -1,17 +1,20 @@
 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.desktop.apps.discord;
+in {
  options.modules.desktop.apps.discord = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.desktop.apps.discord.enable {
-    my.packages = with pkgs; [
-      discord
-      # ripcord
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
+      # If not installed from unstable, Discord will sometimes soft-lock itself
+      # on a "there's an update for discord" screen.
+      unstable.discord
+
+      # unstable.ripcord
    ];
  };
 }
--- a/modules/desktop/apps/godot.nix
+++ b/modules/desktop/apps/godot.nix
@ -4,17 +4,17 @@
 # but to prototype (for 3D, mainly) I'll occasionally reach for godot.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
-  options.modules.dev.godot = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.desktop.apps.godot;
+in {
+  options.modules.desktop.apps.godot = {
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.godot.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      godot
    ];
  };
--- a/modules/desktop/apps/graphics.nix
+++ b/modules/desktop/apps/graphics.nix
@ -1,50 +0,0 @@
-# modules/desktop/apps/graphics.nix
-#
-# The hardest part about switching to linux? Sacrificing Adobe. It really is
-# difficult to replace and its open source alternatives don't *quite* cut it,
-# but enough that I can do a fraction of it on Linux. For the rest I have a
-# second computer dedicated to design work (and gaming).
-
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  options.modules.desktop.apps.graphics =
-    let mkBoolDefault = bool: mkOption {
-          type = types.bool;
-          default = bool;
-        };
-    in {
-      enable = mkBoolDefault false;
-      tools.enable = mkBoolDefault false;
-      raster.enable = mkBoolDefault false;
-      vector.enable = mkBoolDefault false;
-      sprites.enable = mkBoolDefault false;
-    };
-
-  config = let gfx = config.modules.desktop.apps.graphics; in {
-    my.packages = with pkgs;
-      (if gfx.enable || gfx.tools.enable then [
-        font-manager   # so many damned fonts...
-        imagemagick    # for image manipulation from the shell
-      ] else []) ++
-
-      # replaces illustrator & indesign
-      (if gfx.enable || gfx.vector.enable then [
-        unstable.inkscape
-      ] else []) ++
-
-      # Replaces photoshop
-      (if gfx.enable || gfx.raster.enable then [
-        krita
-        gimp
-        gimpPlugins.resynthesizer2  # content-aware scaling in gimp
-      ] else []) ++
-
-      # Sprite sheets & animation
-      (if gfx.enable || gfx.sprites.enable then [ aseprite-unfree ] else []);
-
-    my.home.xdg.configFile = mkIf (gfx.enable || gfx.raster.enable) {
-      "GIMP/2.10" = { source = <config/gimp>; recursive = true; };
-    };
-  };
-}
--- a/modules/desktop/apps/recording.nix
+++ b/modules/desktop/apps/recording.nix
@ -1,28 +0,0 @@
-# modules/desktop/apps/recording.nix
-#
-# OBS to capture footage/stream, DaVinci Resolve for editing (on my Windows
-# system -- it will run on linux, but it can't be automated on nix, what with
-# their devs registration-gating their free download).
-
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  options.modules.desktop.apps.recording =
-    let mkBoolDefault = bool: mkOption {
-          type = types.bool;
-          default = bool;
-        };
-    in {
-      enable = mkBoolDefault false;
-      audio.enable = mkBoolDefault false;
-      video.enable = mkBoolDefault false;
-    };
-
-  config = let rc = config.modules.desktop.apps.recording; in {
-    my.packages = with pkgs;
-      # for recording and remastering audio
-      (if rc.enable || rc.audio.enable then [ audacity ] else []) ++
-      # for longer term streaming/recording the screen
-      (if rc.enable || rc.video.enable then [ obs-studio handbrake ] else []);
-  };
-}
--- a/modules/desktop/apps/rofi.nix
+++ b/modules/desktop/apps/rofi.nix
@ -1,36 +1,34 @@
 { config, options, lib, pkgs, ... }:

 with lib;
-{
+with lib.my;
+let cfg = config.modules.desktop.apps.rofi;
+in {
  options.modules.desktop.apps.rofi = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.desktop.apps.rofi.enable {
-    my = {
+  config = mkIf cfg.enable {
    # link recursively so other modules can link files in its folder
    # home.xdg.configFile."rofi" = {
    #   source = <config/rofi>;
    #   recursive = true;
    # };

-      packages = with pkgs; [
+    user.packages = with pkgs; [
      (writeScriptBin "rofi" ''
        #!${stdenv.shell}
-          exec ${rofi}/bin/rofi -terminal xst -m -1 "$@"
+        exec ${pkgs.rofi}/bin/rofi -terminal xst -m -1 "$@"
      '')

      # For rapidly test changes to rofi's stylesheets
      # (writeScriptBin "rofi-test" ''
      #   #!${stdenv.shell}
      #   themefile=$1
-        #   themename=${modules.theme.name}
+      #   themename=${my.theme.name}
      #   shift
      #   exec rofi \
-        #        -theme ~/.dotfiles/modules/themes/$themename/rofi/$themefile \
+      #        -theme ${themeDir}/$themename/rofi/$themefile \
      #        "$@"
      #   '')

@ -39,28 +37,27 @@ with lib;
        name = "rofi-bookmarkmenu";
        desktopName = "Open Bookmark in Browser";
        icon = "bookmark-new-symbolic";
-          exec = "${<bin/rofi/bookmarkmenu>}";
+        exec = "${binDir}/rofi/bookmarkmenu";
      })
      (makeDesktopItem {
        name = "rofi-filemenu";
        desktopName = "Open Directory in Terminal";
        icon = "folder";
-          exec = "${<bin/rofi/filemenu>}";
+        exec = "${binDir}/rofi/filemenu";
      })
      (makeDesktopItem {
        name = "rofi-filemenu-scratch";
        desktopName = "Open Directory in Scratch Terminal";
        icon = "folder";
-          exec = "${<bin/rofi/filemenu>} -x";
+        exec = "${binDir}/rofi/filemenu -x";
      })

      (makeDesktopItem {
        name = "lock-display";
        desktopName = "Lock screen";
        icon = "system-lock-screen";
-          exec = "${<bin/zzz>}";
+        exec = "${binDir}/zzz";
      })
    ];
  };
-  };
 }
--- a/modules/desktop/apps/skype.nix
+++ b/modules/desktop/apps/skype.nix
@ -1,15 +1,15 @@
 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.desktop.apps.skype;
+in {
  options.modules.desktop.apps.skype = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkEnableOption false;
  };

-  config = mkIf config.modules.desktop.apps.skype.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      skypeforlinux
      skype_call_recorder
    ];
--- a/modules/desktop/apps/unity3d.nix
+++ b/modules/desktop/apps/unity3d.nix
@ -3,17 +3,17 @@
 # I don't use Unity often, but when I do, it's in a team or with students.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
-  options.modules.dev.unity3d = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.desktop.apps.unity3d;
+in {
+  options.modules.desktop.apps.unity3d = {
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.unity3d.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      unity3d
    ];
  };
--- a/modules/desktop/apps/vm.nix
+++ b/modules/desktop/apps/vm.nix
@ -1,26 +0,0 @@
-# modules/desktop/apps/vm.nix
-#
-# For testing software or building it on other OSes. If I find out how to get
-# macOS on qemu/libvirt I'd be happy to leave virtualbox behind.
-
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  options.modules.desktop.apps.vm = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
-  };
-
-  # TODO Figure out macOS guest on libvirt/qemu instead
-  config = mkIf config.modules.desktop.apps.vm.enable {
-    virtualisation.virtualbox.host = {
-      enable = true;
-      # urg, takes so long to build, but needed for macOS guest
-      enableExtensionPack = true;
-    };
-
-    my.user.extraGroups = [ "vboxusers" ];
-  };
-}
--- a/modules/desktop/browsers/default.nix
+++ b/modules/desktop/browsers/default.nix
@ -1,21 +1,14 @@
-{ config, lib, pkgs, ... }:
+{ options, config, lib, pkgs, ... }:
+
 with lib;
-{
-  imports = [
-    ./firefox.nix
-    ./qutebrowser.nix
-    ./vimb.nix
-    ./vivaldi.nix
-  ];
-
+with lib.my;
+let cfg = config.modules.desktop.browsers;
+in {
  options.modules.desktop.browsers = {
-    default = mkOption {
-      type = with types; nullOr str;
-      default = null;
-    };
+    default = mkOpt (with types; nullOr str) null;
  };

-  config = mkIf (config.modules.desktop.browsers.default != null) {
-    my.env.BROWSER = config.modules.desktop.browsers.default;
+  config = mkIf (cfg.default != null) {
+    env.BROWSER = cfg.default;
  };
 }
--- a/modules/desktop/browsers/firefox.nix
+++ b/modules/desktop/browsers/firefox.nix
@ -3,22 +3,30 @@
 # Oh firefox, gateway to the interwebs, devourer of ram. Give onto me your
 # infinite knowledge and shelter me from ads.

-{ config, options, lib, pkgs, ... }:
+{ options, config, lib, pkgs, ... }:
+
 with lib;
-{
-  options.modules.desktop.browsers.firefox = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
-    profileName = mkOption {
-      type = types.str;
-      default = config.my.username;
-    };
+with lib.my;
+let cfg = config.modules.desktop.browsers.firefox;
+in {
+  options.modules.desktop.browsers.firefox = with types; {
+    enable = mkBoolOpt false;
+    profileName = mkOpt types.str config.user.name;
+
+    settings = mkOpt' (attrsOf (oneOf [ bool int str ])) {} ''
+      Firefox preferences to set in <filename>user.js</filename>
+    '';
+    extraConfig = mkOpt' lines "" ''
+      Extra preferences to dd to <filename>user.js</filename>
+    '';
+
+    userChrome  = mkOpt' lines "" "CSS Styles for Firefox's interface";
+    userContent = mkOpt' lines "" "Global CSS Styles for websites";
  };

-  config = mkIf config.modules.desktop.browsers.firefox.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable (mkMerge [
+    {
+      user.packages = with pkgs; [
        firefox-bin
        (makeDesktopItem {
          name = "firefox-private";
@ -30,13 +38,93 @@ with lib;
        })
      ];

-    my.env.XDG_DESKTOP_DIR = "$HOME"; # (try to) prevent ~/Desktop
+      # Prevent auto-creation of ~/Desktop. The trailing slash is necessary; see
+      # https://bugzilla.mozilla.org/show_bug.cgi?id=1082717
+      env.XDG_DESKTOP_DIR = "$HOME/";
+
+      modules.desktop.browsers.firefox.settings = {
+        "devtools.theme" = "dark";
+        # Enable userContent.css and userChrome.css for our theme modules
+        "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+        # Stop creating ~/Downloads!
+        "browser.download.dir" = "${homeDir}/dl";
+        # Don't use the built-in password manager; a nixos user is more likely
+        # using an external one (you are using one, right?).
+        "signon.rememberSignons" = false;
+        # Do not check if Firefox is the default browser
+        "browser.shell.checkDefaultBrowser" = false;
+        # Disable the "new tab page" feature and show a blank tab instead
+        # https://wiki.mozilla.org/Privacy/Reviews/New_Tab
+        # https://support.mozilla.org/en-US/kb/new-tab-page-show-hide-and-customize-top-sites#w_how-do-i-turn-the-new-tab-page-off
+        "browser.newtabpage.enabled" = false;
+        "browser.newtab.url" = "about:blank";
+        # Disable Activity Stream
+        # https://wiki.mozilla.org/Firefox/Activity_Stream
+        "browser.newtabpage.activity-stream.enabled" = false;
+        # Disable new tab tile ads & preload
+        # http://www.thewindowsclub.com/disable-remove-ad-tiles-from-firefox
+        # http://forums.mozillazine.org/viewtopic.php?p=13876331#p13876331
+        # https://wiki.mozilla.org/Tiles/Technical_Documentation#Ping
+        # https://gecko.readthedocs.org/en/latest/browser/browser/DirectoryLinksProvider.html#browser-newtabpage-directory-source
+        # https://gecko.readthedocs.org/en/latest/browser/browser/DirectoryLinksProvider.html#browser-newtabpage-directory-ping
+        "browser.newtabpage.enhanced" = false;
+        "browser.newtab.preload" = false;
+        "browser.newtabpage.directory.ping" = "";
+        "browser.newtabpage.directory.source" = "data:text/plain,{}";
+        # Disable some not so useful functionality.
+        "media.videocontrols.picture-in-picture.video-toggle.enabled" = false;
+        "extensions.htmlaboutaddons.recommendations.enabled" = false;
+        "extensions.htmlaboutaddons.discover.enabled" = false;
+        "extensions.pocket.enabled" = false;
+        "app.normandy.enabled" = false;
+        "app.normandy.api_url" = "";
+        "extensions.shield-recipe-client.enabled" = false;
+        "app.shield.optoutstudies.enabled" = false;
+        # Disable battery API
+        # https://developer.mozilla.org/en-US/docs/Web/API/BatteryManager
+        # https://bugzilla.mozilla.org/show_bug.cgi?id=1313580
+        "dom.battery.enabled" = false;
+        # Disable "beacon" asynchronous HTTP transfers (used for analytics)
+        # https://developer.mozilla.org/en-US/docs/Web/API/navigator.sendBeacon
+        "beacon.enabled" = false;
+        # Disable pinging URIs specified in HTML <a> ping= attributes
+        # http://kb.mozillazine.org/Browser.send_pings
+        "browser.send_pings" = false;
+        # Disable gamepad API to prevent USB device enumeration
+        # https://www.w3.org/TR/gamepad/
+        # https://trac.torproject.org/projects/tor/ticket/13023
+        "dom.gamepad.enabled" = false;
+        # Don't try to guess domain names when entering an invalid domain name in URL bar
+        # http://www-archive.mozilla.org/docs/end-user/domain-guessing.html
+        "browser.fixup.alternate.enabled" = false;
+        # Disable telemetry
+        # https://wiki.mozilla.org/Platform/Features/Telemetry
+        # https://wiki.mozilla.org/Privacy/Reviews/Telemetry
+        # https://wiki.mozilla.org/Telemetry
+        # https://www.mozilla.org/en-US/legal/privacy/firefox.html#telemetry
+        # https://support.mozilla.org/t5/Firefox-crashes/Mozilla-Crash-Reporter/ta-p/1715
+        # https://wiki.mozilla.org/Security/Reviews/Firefox6/ReviewNotes/telemetry
+        # https://gecko.readthedocs.io/en/latest/browser/experiments/experiments/manifest.html
+        # https://wiki.mozilla.org/Telemetry/Experiments
+        # https://support.mozilla.org/en-US/questions/1197144
+        # https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html#id1
+        "toolkit.telemetry.enabled" = false;
+        "toolkit.telemetry.unified" = false;
+        "toolkit.telemetry.archive.enabled" = false;
+        "experiments.supported" = false;
+        "experiments.enabled" = false;
+        "experiments.manifest.uri" = "";
+        # Disable health reports (basically more telemetry)
+        # https://support.mozilla.org/en-US/kb/firefox-health-report-understand-your-browser-perf
+        # https://gecko.readthedocs.org/en/latest/toolkit/components/telemetry/telemetry/preferences.html
+        "datareporting.healthreport.uploadEnabled" = false;
+        "datareporting.healthreport.service.enabled" = false;
+        "datareporting.policy.dataSubmissionEnabled" = false;
+      };

      # Use a stable profile name so we can target it in themes
-    my.home.home.file =
-      let cfg = config.modules.desktop.browsers.firefox; in
-      {
-        ".mozilla/firefox/profiles.ini".text = ''
+      home.file = let cfgPath = ".mozilla/firefox"; in {
+        "${cfgPath}/profiles.ini".text = ''
          [Profile0]
          Name=default
          IsRelative=1
@ -47,6 +135,27 @@ with lib;
          StartWithLastProfile=1
          Version=2
        '';
+
+        "${cfgPath}/${cfg.profileName}.default/user.js" =
+          mkIf (cfg.settings != {} || cfg.extraConfig != "") {
+            text = ''
+              ${concatStrings (mapAttrsToList (name: value: ''
+                user_pref("${name}", ${builtins.toJSON value});
+              '') cfg.settings)}
+              ${cfg.extraConfig}
+            '';
+          };
+
+        "${cfgPath}/${cfg.profileName}.default/chrome/userChrome.css" =
+          mkIf (cfg.userChrome != "") {
+            text = cfg.userChrome;
+          };
+
+        "${cfgPath}/${cfg.profileName}.default/chrome/userContent.css" =
+          mkIf (cfg.userContent != "") {
+            text = cfg.userContent;
          };
      };
    }
+  ]);
+}
--- a/modules/desktop/browsers/qutebrowser.nix
+++ b/modules/desktop/browsers/qutebrowser.nix
@ -3,18 +3,19 @@
 # Qutebrowser is cute because it's not enough of a browser to be handsome.
 # Still, we can all tell he'll grow up to be one hell of a lady-killer.

-{ config, options, lib, pkgs, ... }:
+{ options, config, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.desktop.browsers.qutebrowser;
+in {
  options.modules.desktop.browsers.qutebrowser = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
+    userStyles = mkOpt types.lines "";
  };

-  config = mkIf config.modules.desktop.browsers.qutebrowser.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      qutebrowser
      (makeDesktopItem {
        name = "qutebrowser-private";
@ -25,9 +26,13 @@ with lib;
        categories = "Network";
      })
    ];
-    my.home.xdg.configFile."qutebrowser" = {
-      source = <config/qutebrowser>;
+
+    home = {
+      configFile."qutebrowser" = {
+        source = "${configDir}/qutebrowser";
        recursive = true;
      };
+      dataFile."qutebrowser/userstyles.css".text = userStyles;
+    };
  };
 }
--- a/modules/desktop/browsers/vimb.nix
+++ b/modules/desktop/browsers/vimb.nix
@ -1,28 +0,0 @@
-# NOTE pkgs.vimb is unmaintained and broken on nixos. This module doesn't work,
-# and only exists for posterity. Don't use it!
-
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  options.modules.desktop.browsers.vimb = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
-  };
-
-  config = mkIf config.modules.desktop.browsers.vimb.enable {
-    my.packages = with pkgs; [
-      vimb
-      tabbed
-      (makeDesktopItem {
-        name = "vimb-private";
-        desktopName = "Vimb (Private)";
-        genericName = "Open an incognito Vimb window";
-        icon = "vim";
-        exec = "${firefox-bin}/bin/vimb --incognito";
-        categories = "Network";
-      })
-    ];
-  };
-}
--- a/modules/desktop/browsers/vivaldi.nix
+++ b/modules/desktop/browsers/vivaldi.nix
@ -1,27 +0,0 @@
-# modules/browser/vivaldi.nix --- ...
-
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  options.modules.desktop.browsers.vivaldi = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
-  };
-
-  config = mkIf config.modules.desktop.browsers.vivaldi.enable {
-    my.packages = with pkgs; [
-      vivaldi
-      vivaldi-widevine
-      (makeDesktopItem {
-        name = "vivaldi-private";
-        desktopName = "Vivaldi (Incognito)";
-        genericName = "Open an incognito Vivaldi window";
-        icon = "vivaldi";
-        exec = "${vivaldi}/bin/vivaldi --incognito";
-        categories = "Network";
-      })
-    ];
-  };
-}
--- a/modules/desktop/bspwm.nix
+++ b/modules/desktop/bspwm.nix
@ -1,15 +1,14 @@
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  imports = [
-    ./common.nix
-  ];
+{ options, config, lib, pkgs, ... }:

+with lib;
+with lib.my;
+let cfg = config.modules.desktop.bspwm;
+in {
  options.modules.desktop.bspwm = {
-    enable = mkOption { type = types.bool; default = false; };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.desktop.bspwm.enable {
+  config = mkIf cfg.enable {
    environment.systemPackages = with pkgs; [
      lightdm
      dunst
@ -25,18 +24,29 @@ with lib;
      redshift.enable = true;
      xserver = {
        enable = true;
-        displayManager.defaultSession = "none+bspwm";
-        displayManager.lightdm.enable = true;
-        displayManager.lightdm.greeters.mini.enable = true;
+        displayManager = {
+          defaultSession = "none+bspwm";
+          lightdm.enable = true;
+          lightdm.greeters.mini.enable = true;
+        };
        windowManager.bspwm.enable = true;
      };
    };

+    systemd.user.services."dunst" = {
+      enable = true;
+      description = "";
+      wantedBy = [ "default.target" ];
+      serviceConfig.Restart = "always";
+      serviceConfig.RestartSec = 2;
+      serviceConfig.ExecStart = "${pkgs.dunst}/bin/dunst";
+    };
+
    # link recursively so other modules can link files in their folders
-    my.home.xdg.configFile = {
-      "sxhkd".source = <config/sxhkd>;
+    home.configFile = {
+      "sxhkd".source = "${configDir}/sxhkd";
      "bspwm" = {
-        source = <config/bspwm>;
+        source = "${configDir}/bspwm";
        recursive = true;
      };
    };
--- a/modules/desktop/common.nix
+++ b/modules/desktop/common.nix
@ -1,103 +0,0 @@
-{ config, lib, pkgs, ... }:
-{
-  my.packages = with pkgs; [
-    # I often need a thumbnail browser to show off, peruse or organize photos,
-    # design work, or digital art.
-    xfce.thunar
-    xfce.tumbler # for thumbnails
-
-    calibre   # managing my ebooks
-    evince    # pdf reader
-    feh       # image viewer
-    mpv       # video player
-    xclip
-    xdotool
-    libqalculate  # calculator cli w/ currency conversion
-    (makeDesktopItem {
-      name = "scratch-calc";
-      desktopName = "Calculator";
-      icon = "calc";
-      exec = "scratch '${tmux}/bin/tmux new-session -s calc -n calc qalc'";
-      categories = "Development";
-    })
-  ];
-
-  ## Sound
-  sound.enable = true;
-  hardware.pulseaudio.enable = true;
-
-  ## Fonts
-  fonts = {
-    enableFontDir = true;
-    enableGhostscriptFonts = true;
-    fonts = with pkgs; [
-      ubuntu_font_family
-      dejavu_fonts
-      fira-code
-      fira-code-symbols
-      symbola
-      noto-fonts
-      noto-fonts-cjk
-      font-awesome-ttf
-      siji
-    ];
-    fontconfig.defaultFonts = {
-      sansSerif = ["Ubuntu"];
-      monospace = ["Fira Code"];
-    };
-  };
-
-  ## Apps/Services
-  # For redshift
-  location = (if config.time.timeZone == "America/Toronto" then {
-    latitude = 43.70011;
-    longitude = -79.4163;
-  } else if config.time.timeZone == "Europe/Copenhagen" then {
-    latitude = 55.88;
-    longitude = 12.5;
-  } else {});
-
-  services.xserver = {
-    displayManager.lightdm.greeters.mini.user = config.my.username;
-  };
-
-  services.picom = {
-    backend = "glx";
-    vSync = true;
-    opacityRules = [
-      # "100:class_g = 'Firefox'"
-      # "100:class_g = 'Vivaldi-stable'"
-      "100:class_g = 'VirtualBox Machine'"
-      # Art/image programs where we need fidelity
-      "100:class_g = 'Gimp'"
-      "100:class_g = 'Inkscape'"
-      "100:class_g = 'aseprite'"
-      "100:class_g = 'krita'"
-      "100:class_g = 'feh'"
-      "100:class_g = 'mpv'"
-      "100:class_g = 'Rofi'"
-      "100:class_g = 'Peek'"
-      "99:_NET_WM_STATE@:32a = '_NET_WM_STATE_FULLSCREEN'"
-    ];
-    shadowExclude = [
-      # Put shadows on notifications, the scratch popup and rofi only
-      "! name~='(rofi|scratch|Dunst)$'"
-    ];
-    settings.blur-background-exclude = [
-      "window_type = 'dock'"
-      "window_type = 'desktop'"
-      "class_g = 'Rofi'"
-      "_GTK_FRAME_EXTENTS@:c"
-    ];
-  };
-
-  # Try really hard to get QT to respect my GTK theme.
-  my.env.GTK_DATA_PREFIX = [ "${config.system.path}" ];
-  my.env.QT_QPA_PLATFORMTHEME = "gtk2";
-  qt5 = { style = "gtk2"; platformTheme = "gtk2"; };
-  services.xserver.displayManager.sessionCommands = ''
-    export GTK2_RC_FILES="$XDG_CONFIG_HOME/gtk-2.0/gtkrc"
-    source "$XDG_CONFIG_HOME"/xsession/*.sh
-    xrdb -merge "$XDG_CONFIG_HOME"/xtheme/*
-  '';
-}
--- a/modules/desktop/default.nix
+++ b/modules/desktop/default.nix
@ -1,13 +1,140 @@
-{ config, lib, pkgs, ... }:
+{ config, options, lib, pkgs, ... }:

+with lib;
+with lib.my;
+let cfg = config.modules.desktop;
+in {
+  config = mkIf config.services.xserver.enable {
+    assertions = [
      {
-  imports = [
-    ./bspwm.nix
-    # ./stumpwm.nix
-
-    ./apps
-    ./term
-    ./browsers
-    ./gaming
-  ];
+        assertion = (countAttrs (n: v: n == "enable" && value) cfg) < 2;
+        message = "Can't have more than one desktop environment enabled at a time";
+      }
+      {
+        assertion =
+          let srv = config.services;
+          in srv.xserver.enable ||
+             srv.sway.enable ||
+             !(anyAttrs
+               (n: v: isAttrs v &&
+                      anyAttrs (n: v: isAttrs v && v.enable))
+               cfg);
+        message = "Can't enable a desktop app without a desktop environment";
+      }
+    ];
+
+    user.packages = with pkgs; [
+      feh       # image viewer
+      xclip
+      xdotool
+
+      libqalculate  # calculator cli w/ currency conversion
+      (makeDesktopItem {
+        name = "scratch-calc";
+        desktopName = "Calculator";
+        icon = "calc";
+        exec = ''scratch "${tmux}/bin/tmux new-session -s calc -n calc qalc"'';
+        categories = "Development";
+      })
+    ];
+
+    fonts = {
+      enableFontDir = true;
+      enableGhostscriptFonts = true;
+      fonts = with pkgs; [
+        ubuntu_font_family
+        dejavu_fonts
+        fira-code
+        fira-code-symbols
+        symbola
+        noto-fonts
+        noto-fonts-cjk
+        font-awesome-ttf
+        siji
+      ];
+      fontconfig.defaultFonts = {
+        sansSerif = ["Fira Sans"];
+        monospace = ["Fira Code"];
+      };
+    };
+
+    ## Apps/Services
+    services.xserver.displayManager.lightdm.greeters.mini.user = config.user.name;
+
+    services.picom = {
+      backend = "glx";
+      vSync = true;
+      opacityRules = [
+        # "100:class_g = 'Firefox'"
+        # "100:class_g = 'Vivaldi-stable'"
+        "100:class_g = 'VirtualBox Machine'"
+        # Art/image programs where we need fidelity
+        "100:class_g = 'Gimp'"
+        "100:class_g = 'Inkscape'"
+        "100:class_g = 'aseprite'"
+        "100:class_g = 'krita'"
+        "100:class_g = 'feh'"
+        "100:class_g = 'mpv'"
+        "100:class_g = 'Rofi'"
+        "100:class_g = 'Peek'"
+        "99:_NET_WM_STATE@:32a = '_NET_WM_STATE_FULLSCREEN'"
+      ];
+      shadowExclude = [
+        # Put shadows on notifications, the scratch popup and rofi only
+        "! name~='(rofi|scratch|Dunst)$'"
+      ];
+      settings = {
+        blur-background-exclude = [
+          "window_type = 'dock'"
+          "window_type = 'desktop'"
+          "class_g = 'Rofi'"
+          "_GTK_FRAME_EXTENTS@:c"
+        ];
+
+        # Unredirect all windows if a full-screen opaque window is detected, to
+        # maximize performance for full-screen windows. Known to cause
+        # flickering when redirecting/unredirecting windows.
+        unredir-if-possible = true;
+
+        # GLX backend: Avoid using stencil buffer, useful if you don't have a
+        # stencil buffer. Might cause incorrect opacity when rendering
+        # transparent content (but never practically happened) and may not work
+        # with blur-background. My tests show a 15% performance boost.
+        # Recommended.
+        glx-no-stencil = true;
+
+        # Use X Sync fence to sync clients' draw calls, to make sure all draw
+        # calls are finished before picom starts drawing. Needed on
+        # nvidia-drivers with GLX backend for some users.
+        xrender-sync-fence = true;
+      };
+    };
+
+    # Try really hard to get QT to respect my GTK theme.
+    env.GTK_DATA_PREFIX = [ "${config.system.path}" ];
+    env.QT_QPA_PLATFORMTHEME = "gtk2";
+    qt5 = { style = "gtk2"; platformTheme = "gtk2"; };
+    # Also, read xresources files in ~/.config/xtheme/* and init scripts in
+    # ~/.config/xsessions/*, so I can centralize my theme config files.
+    services.xserver.displayManager.sessionCommands =
+      let cfg = config.services.xserver.desktopManager.wallpaper; in ''
+        export GTK2_RC_FILES="$XDG_CONFIG_HOME/gtk-2.0/gtkrc"
+        source "$XDG_CONFIG_HOME"/xsession/*.sh
+        xrdb -merge "$XDG_CONFIG_HOME"/xtheme/*
+        if [ -e "$XDG_DATA_HOME/wallpaper" ]; then
+          ${pkgs.feh}/bin/feh --bg-${cfg.mode} \
+            ${optionalString cfg.combineScreens "--no-xinerama"} \
+            --no-fehbg \
+            $XDG_DATA_HOME/wallpaper
+        fi
+      '';
+
+    # Clean up leftovers, as much as we can
+    system.userActivationScripts.cleanupHome = ''
+      pushd "${homeDir}"
+      rm -rf .compose-cache .nv .pki .dbus .fehbg
+      [ -s .xsession-errors ] || rm -f .xsession-errors*
+      popd
+    '';
+  };
 }
--- a/modules/desktop/gaming/default.nix
+++ b/modules/desktop/gaming/default.nix
@ -1,9 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./emulators.nix
-    ./factorio.nix
-    ./steam.nix
-  ];
-}
--- a/modules/desktop/gaming/emulators.nix
+++ b/modules/desktop/gaming/emulators.nix
@ -1,27 +1,25 @@
-{ config, options, lib, pkgs, ... }:
+{ options, config, lib, pkgs, ... }:

 with lib;
-{
-  options.modules.desktop.gaming.emulators =
-    let mkBoolDefault = bool: mkOption {
-          type = types.bool;
-          default = bool;
-        };
+with lib.my;
+let cfg = config.modules.desktop.gaming.emulators;
 in {
-      psx.enable  = mkBoolDefault false;  # Playstation
-      ds.enable   = mkBoolDefault false;  # Nintendo DS
-      gb.enable   = mkBoolDefault false;  # GameBoy + GameBoy Color
-      gba.enable  = mkBoolDefault false;  # GameBoy Advance
-      snes.enable = mkBoolDefault false;  # Super Nintendo
+  options.modules.desktop.gaming.emulators = {
+    psx.enable  = mkBoolOpt false;  # Playstation
+    ds.enable   = mkBoolOpt false;  # Nintendo DS
+    gb.enable   = mkBoolOpt false;  # GameBoy + GameBoy Color
+    gba.enable  = mkBoolOpt false;  # GameBoy Advance
+    snes.enable = mkBoolOpt false;  # Super Nintendo
  };

-  config = let emu = config.modules.desktop.gaming.emulators; in {
-    my.packages = with pkgs;
-      (if emu.psx.enable then [ epsxe ] else []) ++
-      (if emu.ds.enable then [ desume ] else []) ++
-      (if (emu.gba.enable ||
-           emu.gb.enable ||
-           emu.snes.enable)
-       then [ higan ] else []);
+  config = {
+    user.packages = with pkgs; [
+      (mkIf cfg.psx.enable epsxe)
+      (mkIf cfg.ds.enable desmume)
+      (mkIf (cfg.gba.enable ||
+             cfg.gb.enable  ||
+             cfg.snes.enable)
+        higan)
+    ];
  };
 }
--- a/modules/desktop/gaming/steam.nix
+++ b/modules/desktop/gaming/steam.nix
@ -1,30 +1,53 @@
-{ config, options, lib, pkgs, ... }:
+{ options, config, lib, pkgs, ... }:

 with lib;
-{
-  options.modules.desktop.gaming.steam = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.desktop.gaming.steam;
+in {
+  options.modules.desktop.gaming.steam = with types; {
+    enable = mkBoolOpt false;
+    hardware.enable = mkBoolOpt false;
+    libDir = mkOpt str "$XDG_DATA_HOME/steamlib";
  };

-  config = mkIf config.modules.desktop.gaming.steam.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable (mkMerge [
+    {
+      # I avoid programs.steam.enable because it installs another steam binary,
+      # which the xdesktop package invokes, instead of my steam shims below.
+      hardware.opengl.enable = true;
+      hardware.opengl.driSupport32Bit  = true;
+      hardware.pulseaudio.support32Bit = config.hardware.pulseaudio.enable;
+
+      user.packages = with pkgs; [
        # Get steam to keep its garbage out of $HOME
        (writeScriptBin "steam" ''
          #!${stdenv.shell}
-        HOME="$XDG_DATA_HOME/steamlib" exec ${steam}/bin/steam "$@"
+          HOME="${cfg.libDir}" exec ${steam}/bin/steam "$@"
        '')
-      # for GOG and humblebundle games
+        # for running GOG and humble bundle games
        (writeScriptBin "steam-run" ''
          #!${stdenv.shell}
-        HOME="$XDG_DATA_HOME/steamlib" exec ${steam-run-native}/bin/steam-run "$@"
+          HOME="${cfg.libDir}" exec ${steam-run-native}/bin/steam-run "$@"
        '')
-      xboxdrv  # driver for 360 controller
+        # So a rofi entry exists
+        (makeDesktopItem {
+          name = "steam";
+          desktopName = "Steam";
+          icon = "steam";
+          exec = "steam";
+          terminal = "false";
+          mimeType = "x-scheme-handler/steam";
+          categories = "Network;FileTransfer;Game";
+        })
      ];
+      system.userActivationScripts.setupSteamDir = ''mkdir -p "${cfg.libDir}"'';

-    hardware.opengl.driSupport32Bit = true;
-    hardware.pulseaudio.support32Bit = true;
-  };
+      # better for steam proton games
+      systemd.extraConfig = "DefaultLimitNOFILE=1048576";
+    }
+
+    (mkIf cfg.hardware.enable {
+      hardware.steam-hardware.enable = true;
+    })
+  ]);
 }
--- a/modules/desktop/media/daw.nix
+++ b/modules/desktop/media/daw.nix
@ -1,4 +1,4 @@
-# modules/desktop/apps/daw.nix
+# modules/desktop/media/daw.nix
 #
 # I make music for my games. LMMS is my DAW; or will be, once I've weened myself
 # off of Fruityloops. When I'm in the mood for a quicky I fire up sunvox
@ -6,17 +6,17 @@
 # ever need to.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
-  options.modules.desktop.apps.daw = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.desktop.media.daw;
+in {
+  options.modules.desktop.media.daw = {
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.desktop.apps.daw.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      # lmms on stable is broken due to 'Could not find the Qt platform plugin
      # "xcb" in ""' error: https://github.com/NixOS/nixpkgs/issues/76074
      unstable.lmms   # for making music
--- a/modules/desktop/media/documents.nix
+++ b/modules/desktop/media/documents.nix
@ -0,0 +1,24 @@
+# modules/desktop/media/docs.nix
+
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.media.documents;
+in {
+  options.modules.desktop.media.documents = {
+    enable = mkBoolOpt false;
+    pdf.enable = mkBoolOpt false;
+    ebook.enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
+      (mkIf cfg.ebook.enable calibre)
+      (mkIf cfg.pdf.enable   evince)
+      # zathura
+    ];
+
+    # TODO calibre/evince/zathura dotfiles
+  };
+}
--- a/modules/desktop/media/graphics.nix
+++ b/modules/desktop/media/graphics.nix
@ -0,0 +1,50 @@
+# modules/desktop/media/graphics.nix
+#
+# The hardest part about switching to linux? Sacrificing Adobe. It really is
+# difficult to replace and its open source alternatives don't *quite* cut it,
+# but enough that I can do a fraction of it on Linux. For the rest I have a
+# second computer dedicated to design work (and gaming).
+
+{ config, options, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.media.graphics;
+in {
+  options.modules.desktop.media.graphics = {
+    enable         = mkBoolOpt false;
+    tools.enable   = mkBoolOpt true;
+    raster.enable  = mkBoolOpt true;
+    vector.enable  = mkBoolOpt true;
+    sprites.enable = mkBoolOpt true;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = with pkgs;
+      (if cfg.tools.enable then [
+        font-manager   # so many damned fonts...
+        imagemagick    # for image manipulation from the shell
+      ] else []) ++
+
+      # replaces illustrator & indesign
+      (if cfg.vector.enable then [
+        unstable.inkscape
+      ] else []) ++
+
+      # Replaces photoshop
+      (if cfg.raster.enable then [
+        krita
+        gimp
+        gimpPlugins.resynthesizer2  # content-aware scaling in gimp
+      ] else []) ++
+
+      # Sprite sheets & animation
+      (if cfg.sprites.enable then [
+        aseprite-unfree
+      ] else []);
+
+    home.configFile = mkIf cfg.raster.enable {
+      "GIMP/2.10" = { source = "${configDir}/gimp"; recursive = true; };
+    };
+  };
+}
--- a/modules/desktop/media/mpv.nix
+++ b/modules/desktop/media/mpv.nix
@ -1,15 +1,15 @@
 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
-  options.modules.media.mpv = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.desktop.media.mpv;
+in {
+  options.modules.desktop.media.mpv = {
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.media.mpv.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      mpv-with-scripts
      mpvc  # CLI controller for mpv
      (mkIf config.services.xserver.enable
--- a/modules/desktop/media/ncmpcpp.nix
+++ b/modules/desktop/media/ncmpcpp.nix
@ -0,0 +1,26 @@
+{ config, options, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.media.ncmpcpp;
+in {
+  options.modules.desktop.media.ncmpcpp = {
+    enable = mkBoolOpt false;
+    # modipy.enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
+      (ncmpcpp.override { visualizerSupport = true; })
+    ];
+
+    env.NCMPCPP_HOME = "$XDG_CONFIG_HOME/ncmpcpp";
+
+    # Symlink these one at a time because ncmpcpp writes other files to
+    # ~/.config/ncmpcpp, so it needs to be writeable.
+    home.configFile = {
+      "ncmpcpp/config".source   = "${configDir}/ncmpcpp/config";
+      "ncmpcpp/bindings".source = "${configDir}/ncmpcpp/bindings";
+    };
+  };
+}
--- a/modules/desktop/media/recording.nix
+++ b/modules/desktop/media/recording.nix
@ -0,0 +1,26 @@
+# modules/desktop/media/recording.nix
+#
+# OBS to capture footage/stream, audacity for audio, handbrake to encode it all.
+# This, paired with DaVinci Resolve for video editing (on my Windows system) and
+# I have what I need for youtube videos and streaming.
+
+{ config, options, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.media.recording;
+in {
+  options.modules.desktop.media.recording = {
+    enable = mkBoolOpt false;
+    audio.enable = mkBoolOpt true;
+    video.enable = mkBoolOpt true;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = with pkgs;
+      # for recording and remastering audio
+      (if cfg.audio.enable then [ audacity ] else []) ++
+      # for longer term streaming/recording the screen
+      (if cfg.video.enable then [ obs-studio handbrake ] else []);
+  };
+}
--- a/modules/desktop/media/spotify.nix
+++ b/modules/desktop/media/spotify.nix
@ -2,38 +2,39 @@
 # local music; most of which I haven't heard or don't even like.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
-  options.modules.media.spotify = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.desktop.media.spotify;
+in {
+  options.modules.desktop.media.spotify = {
+    enable = mkBoolOpt false;
+    tui.enable = mkBoolOpt false;  # TODO
  };

-  config = mkIf config.modules.media.spotify.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
+      # spotify-tui is fine for selecting and playing music, but incomplete. We
+      # still occasionally need the official client for more sophisticated
+      # search and the "made for you" playlists.
+      spotify
+
      # # services.spotifyd doesn't work so we'll have to roll our own spotifyd +
      # # spotify-tui solution. The dbus interface doesn't work, though, so we
      # # have to wait for spotify-tui to implement CLI command for controlling
      # # spotify playback. See
      # # https://github.com/Rigellute/spotify-tui/issues/147 or for spotifyd to
      # # get fixed.
-      # unstable.spotifyd
+      # master.spotifyd
      # (writeScriptBin "spt" ''
      #   #!${stdenv.shell}
      #   if ! systemctl --user is-active spotifyd >/dev/null; then
      #     systemctl --user start spotifyd
      #   fi
      #   echo $TMUX >/tmp/spt.tmux
-      #   exec ${unstable.spotify-tui}/bin/spt
+      #   exec ${master.spotify-tui}/bin/spt
      # '')

-      # spotify-tui is fine for selecting and playing music, but incomplete. We
-      # still occasionally need the official client for more sophisticated
-      # search and the "made for you" playlists.
-      spotify
-
      # # Since dbus doesn't work with Nix's spotifyd/spotify-tui, and I always
      # # use tmux for my terminal, may as well exploit tmux to control spotify.
      # playerctl
@ -84,11 +85,11 @@ with lib;
  #         password_cmd = ${pkgs.pass}/bin/pass www/spotify.com | head -n1
  #         backend = pulseaudio
  #         on_song_change_hook = spt-send-notify
-  #         cache_path = /home/${config.my.username}/.cache/spotifyd
+  #         cache_path = ${config.my.home}/.cache/spotifyd
  #       '';
  #     in {
  #       ExecStart = ''
-  #         ${pkgs.unstable.spotifyd}/bin/spotifyd --no-daemon \
+  #         ${pkgs.master.spotifyd}/bin/spotifyd --no-daemon \
  #                                                --cache-path /tmp/spotifyd \
  #                                                --config-path ${spotifydConf}
  #       '';
--- a/modules/desktop/stumpwm.nix
+++ b/modules/desktop/stumpwm.nix
@ -1,17 +1,21 @@
-{ config, lib, pkgs, ... }:
+{ options, config, lib, pkgs, ... }:

-{
-  imports = [
-    ./common.nix
-  ];
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.stumpwm;
+in {
+  options.modules.desktop.stumpwm = {
+    enable = mkBoolOpt false;
+  };

+  config = mkIf cfg.enable {
    environment.systemPackages = with pkgs; [
      lightdm
      dunst
      libnotify
    ];

-  # unstable.services.picom.enable = true;
+    # master.services.picom.enable = true;
    services = {
      redshift.enable = true;
      xserver = {
@ -24,8 +28,9 @@
    };

    # link recursively so other modules can link files in their folders
-  my.home.xdg.configFile."stumpwm" = {
-    source = <config/stumpwm>;
+    home.configFile."stumpwm" = {
+      source = "${configDir}/stumpwm";
      recursive = true;
    };
+  };
 }
--- a/modules/desktop/term/default.nix
+++ b/modules/desktop/term/default.nix
@ -1,23 +1,16 @@
-{ config, options, lib, pkgs, ... }:
-with lib;
-{
-  imports = [
-    # ./alacritty.nix
-    ./st.nix
-    # ./urxvt.nix
-  ];
+{ options, config, lib, pkgs, ... }:

+with lib;
+with lib.my;
+let cfg = config.modules.desktop.term;
+in {
  options.modules.desktop.term = {
-    default = mkOption {
-      type = types.str;
-      default = "xterm";
-    };
+    default = mkOpt types.str "xterm";
  };

  config = {
-    services.xserver.desktopManager.xterm.enable =
-      config.modules.desktop.term.default == "xterm";
+    services.xserver.desktopManager.xterm.enable = mkDefault (cfg.default == "xterm");

-    my.env.TERMINAL = config.modules.editors.default;
+    env.TERMINAL = cfg.default;
  };
 }
--- a/modules/desktop/term/st.nix
+++ b/modules/desktop/term/st.nix
@ -1,19 +1,25 @@
-{ config, lib, pkgs, ... }:
+# modules/desktop/term/st.nix
+#
+# I like (x)st. This appears to be a controversial opinion; don't tell anyone,
+# mkay?
+
+{ options, config, lib, pkgs, ... }:

 with lib;
-{
+with lib.my;
+let cfg = config.modules.desktop.term.st;
+in {
  options.modules.desktop.term.st = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.desktop.term.st.enable {
+  config = mkIf cfg.enable {
    # xst-256color isn't supported over ssh, so revert to a known one
-    my.zsh.rc = ''[ "$TERM" = xst-256color ] && export TERM=xterm-256color'';
+    modules.shell.zsh.rcInit = ''
+      [ "$TERM" = xst-256color ] && export TERM=xterm-256color
+    '';

-    my.packages = with pkgs; [
+    user.packages = with pkgs; [
      xst  # st + nice-to-have extensions
      (makeDesktopItem {
        name = "xst";
--- a/modules/desktop/vm/lxd.nix
+++ b/modules/desktop/vm/lxd.nix
@ -0,0 +1,32 @@
+# Inspired by https://www.srid.ca/2012301.html
+
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.vm.lxd;
+in {
+  options.modules.desktop.vm.lxd = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    virtualisation.lxd.enable = true;
+
+    user.packages = [
+      (pkgs.writeScriptBin "lxc-build-nixos-image" ''
+        #!/usr/bin/env nix-shell
+        #!nix-shell -i bash -p nixos-generators
+        set -xe
+        config=$1
+        metaimg=`nixos-generate -f lxc-metadata \
+          | xargs -r cat \
+          | awk '{print $3}'`
+        img=`nixos-generate -c $config -f lxc \
+          | xargs -r cat \
+          | awk '{print $3}'`
+        lxc image import --alias nixos $metaimg $img
+      '')
+    ];
+  };
+}
--- a/modules/desktop/vm/qemu.nix
+++ b/modules/desktop/vm/qemu.nix
@ -0,0 +1,21 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.vm.qemu;
+in {
+  options.modules.desktop.vm.qemu = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      qemu
+    ];
+  };
+}
+
+# Creating an image:
+#   qemu-img create -f qcow2 disk.img
+# Creating a snapshot (don't tamper with disk.img):
+#   qemu-img create -f qcow2 -b disk.img snapshot.img
--- a/modules/desktop/vm/virtualbox.nix
+++ b/modules/desktop/vm/virtualbox.nix
@ -0,0 +1,25 @@
+# modules/desktop/vm/virtualbox.nix
+#
+# For testing or building software on other OSes. If I find out how to get macOS
+# on qemu/libvirt I'd be happy to leave virtualbox behind.
+
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.desktop.vm.virtualbox;
+in {
+  options.modules.desktop.vm.virtualbox = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    virtualisation.virtualbox.host = {
+      enable = true;
+      # urg, takes so long to build, but needed for macOS guest
+      # enableExtensionPack = true;
+    };
+
+    user.extraGroups = [ "vboxusers" ];
+  };
+}
--- a/modules/dev/cc.nix
+++ b/modules/dev/cc.nix
@ -5,17 +5,17 @@
 # tell anyone pls.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.cc;
+in {
  options.modules.dev.cc = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.cc.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      clang
      gcc
      bear
--- a/modules/dev/clojure.nix
+++ b/modules/dev/clojure.nix
@ -2,18 +2,18 @@
 #
 # I don't use clojure. Perhaps one day...

-{ config, options, lib, pkgs, ... }:
+{ config, options, lib, pkgs, my, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.clojure;
+in {
  options.modules.dev.clojure = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.clojure.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      clojure
      joker
      leiningen
--- a/modules/dev/common-lisp.nix
+++ b/modules/dev/common-lisp.nix
@ -3,17 +3,17 @@
 # Mostly for my stumpwm config, and the occasional dip into lisp gamedev.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.common-lisp;
+in {
  options.modules.dev.common-lisp = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.common-lisp.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      sbcl
      lispPackages.quicklisp
    ];
--- a/modules/dev/default.nix
+++ b/modules/dev/default.nix
@ -1,23 +0,0 @@
-# modules/dev --- common settings for dev modules
-
-{ pkgs, ... }:
-{
-  imports = [
-    ./cc.nix
-    ./clojure.nix
-    ./common-lisp.nix
-    ./godot.nix
-    # ./haskell.nix
-    # ./latex.nix
-    ./lua.nix
-    ./node.nix
-    ./python.nix
-    ./rust.nix
-    ./scala.nix
-    ./unity3d.nix
-    ./zsh.nix
-  ];
-
-  options = {};
-  config = {};
-}
--- a/modules/dev/lua.nix
+++ b/modules/dev/lua.nix
@ -6,24 +6,21 @@
 # on a per-project basis.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.lua;
+in {
  options.modules.dev.lua = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
+    love2D.enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.lua.enable {
-    my = {
-      packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      lua
      luaPackages.moonscript
-        luarocks
+      (mkIf cfg.love2D.enable love2d)
    ];
-
-      zsh.rc = ''eval "$(luarocks path --bin)"'';
-    };
  };
 }
--- a/modules/dev/node.nix
+++ b/modules/dev/node.nix
@ -4,18 +4,17 @@
 # disaster" languages.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.node;
+in {
  options.modules.dev.node = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.node.enable {
-    my = {
-      packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      nodejs
      yarn
    ];
@ -28,13 +27,14 @@ with lib;
    env.PATH = [ "$(yarn global bin)" ];

    # Run locally installed bin-script, e.g. n coffee file.coffee
-      alias.n  = "PATH=\"$(npm bin):$PATH\"";
-      alias.ya = "yarn";
+    environment.shellAliases = {
+      n  = "PATH=\"$(npm bin):$PATH\"";
+      ya = "yarn";
+    };

-      home.xdg.configFile."npm/config".text = ''
+    home.configFile."npm/config".text = ''
      cache=$XDG_CACHE_HOME/npm
      prefix=$XDG_DATA_HOME/npm
    '';
  };
-  };
 }
--- a/modules/dev/python.nix
+++ b/modules/dev/python.nix
@ -4,19 +4,18 @@
 # me. The Py2->3 transition make trainwrecks jealous. But SciPy, NumPy, iPython
 # and Jupyter can have my babies. Every single one.

-{ config, options, lib, pkgs, ... }:
+{ config, options, lib, pkgs, my, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.python;
+in {
  options.modules.dev.python = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.python.enable {
-    my = {
-      packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      python37
      python37Packages.pip
      python37Packages.ipython
@ -35,14 +34,13 @@ with lib;
    env.PYTHON_EGG_CACHE = "$XDG_CACHE_HOME/python-eggs";
    env.JUPYTER_CONFIG_DIR = "$XDG_CONFIG_HOME/jupyter";

-      zsh.rc = lib.readFile <config/python/aliases.zsh>;
-
-      alias.py  = "python";
-      alias.py2 = "python2";
-      alias.py3 = "python3";
-      alias.po  = "poetry";
-      alias.ipy = "ipython --no-banner";
-      alias.ipylab = "ipython --pylab=qt5 --no-banner";
+    environment.shellAliases = {
+      py     = "python";
+      py2    = "python2";
+      py3    = "python3";
+      po     = "poetry";
+      ipy    = "ipython --no-banner";
+      ipylab = "ipython --pylab=qt5 --no-banner";
    };
  };
 }
--- a/modules/dev/rust.nix
+++ b/modules/dev/rust.nix
@ -8,18 +8,17 @@
 # all the world's problems to be wonderful?

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.rust;
+in {
  options.modules.dev.rust = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.rust.enable {
-    my = {
-      packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      rustup
    ];

@ -27,9 +26,10 @@ with lib;
    env.CARGO_HOME = "$XDG_DATA_HOME/cargo";
    env.PATH = [ "$CARGO_HOME/bin" ];

-      alias.rs  = "rustc";
-      alias.rsp = "rustup";
-      alias.ca  = "cargo";
+    environment.shellAliases = {
+      rs  = "rustc";
+      rsp = "rustup";
+      ca  = "cargo";
    };
  };
 }
--- a/modules/dev/scala.nix
+++ b/modules/dev/scala.nix
@ -1,16 +1,15 @@
+{ config, options, lib, pkgs, my, ... }:

-{ config, options, lib, pkgs, ... }:
 with lib;
-{
+with lib.my;
+let cfg = config.modules.dev.scala;
+in {
  options.modules.dev.scala = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.scala.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      scala
      jdk
      sbt
--- a/modules/dev/shell.nix
+++ b/modules/dev/shell.nix
@ -1,24 +1,23 @@
-# modules/dev/zsh.nix --- http://zsh.sourceforge.net/
+# modules/dev/shell.nix --- http://zsh.sourceforge.net/
 #
 # Shell script programmers are strange beasts. Writing programs in a language
 # that wasn't intended as a programming language. Alas, it is not for us mere
 # mortals to question the will of the ancient ones. If they want shell programs,
 # they get shell programs.

-{ config, options, lib, pkgs, ... }:
+{ config, options, lib, pkgs, my, ... }:
+
 with lib;
-{
-  options.modules.dev.zsh = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+with lib.my;
+let cfg = config.modules.dev.shell;
+in {
+  options.modules.dev.shell = {
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.dev.zsh.enable {
-    my.packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      shellcheck
-      my.zunit
    ];
  };
 }
--- a/modules/editors/default.nix
+++ b/modules/editors/default.nix
@ -1,19 +1,14 @@
 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
-  imports = [
-    ./emacs.nix
-    ./vim.nix
-  ];
-
+with lib.my;
+let cfg = config.modules.editors;
+in {
  options.modules.editors = {
-    default = mkOption {
-      type = types.str;
-      default = "vi";
-    };
+    default = mkOpt types.str "vim";
  };

-  config = mkIf (config.modules.editors.default != null) {
-    my.env.EDITOR = config.modules.editors.default;
+  config = mkIf (cfg.default != null) {
+    env.EDITOR = cfg.default;
  };
 }
--- a/modules/editors/emacs.nix
+++ b/modules/editors/emacs.nix
@ -2,25 +2,26 @@
 # https://github.com/hlissner/doom-emacs. This module sets it up to meet my
 # particular Doomy needs.

-{ config, options, lib, pkgs, ... }:
+{ config, options, lib, pkgs, inputs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.editors.emacs;
+in {
  options.modules.editors.emacs = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
-    pkg = mkOption {
-      type = types.package;
-      default = pkgs.emacsUnstable;
+    enable = mkBoolOpt false;
+    doom = {
+      enable  = mkBoolOpt true;
+      fromSSH = mkBoolOpt false;
    };
  };

-  config = mkIf config.modules.editors.emacs.enable {
-    my = {
-      packages = with pkgs; [
+  config = mkIf cfg.enable {
+    nixpkgs.overlays = [ inputs.emacs-overlay.overlay ];
+
+    user.packages = with pkgs; [
      ## Doom dependencies
-        config.modules.editors.emacs.pkg
+      emacsUnstable       # 27.1
      git
      (ripgrep.override {withPCRE2 = true;})
      gnutls              # for TLS connectivity
@ -28,16 +29,15 @@ with lib;
      ## Optional dependencies
      fd                  # faster projectile indexing
      imagemagick         # for image-dired
-        (lib.mkIf (config.programs.gnupg.agent.enable)
+      (mkIf (config.programs.gnupg.agent.enable)
        pinentry_emacs)   # in-emacs gnupg prompts
      zstd                # for undo-fu-session/undo-tree compression

      ## Module dependencies
      # :checkers spell
-        aspell
-        aspellDicts.en
-        aspellDicts.en-computers
-        aspellDicts.en-science
+      (aspellWithDicts (ds: with ds; [
+        en en-computers en-science
+      ]))
      # :checkers grammar
      languagetool
      # :tools editorconfig
@ -52,15 +52,26 @@ with lib;
      texlive.combined.scheme-medium
      # :lang rust
      rustfmt
-        rls
+      unstable.rust-analyzer
    ];

    env.PATH = [ "$XDG_CONFIG_HOME/emacs/bin" ];
-      zsh.rc = lib.readFile <config/emacs/aliases.zsh>;
-    };

-    fonts.fonts = [
-      pkgs.emacs-all-the-icons-fonts
-    ];
+    modules.shell.zsh.rcFiles = [ "${configDir}/emacs/aliases.zsh" ];
+
+    fonts.fonts = [ pkgs.emacs-all-the-icons-fonts ];
+
+    # init.doomEmacs = mkIf cfg.doom.enable ''
+    #   if [ -d $HOME/.config/emacs ]; then
+    #      ${optionalString cfg.doom.fromSSH ''
+    #         git clone git@github.com:hlissner/doom-emacs.git $HOME/.config/emacs
+    #         git clone git@github.com:hlissner/doom-emacs-private.git $HOME/.config/doom
+    #      ''}
+    #      ${optionalString (cfg.doom.fromSSH == false) ''
+    #         git clone https://github.com/hlissner/doom-emacs $HOME/.config/emacs
+    #         git clone https://github.com/hlissner/doom-emacs-private $HOME/.config/doom
+    #      ''}
+    #   fi
+    # '';
  };
 }
--- a/modules/editors/vim.nix
+++ b/modules/editors/vim.nix
@ -2,25 +2,26 @@
 # go-to. I am a vimmer at heart, after all.

 { config, options, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.editors.vim;
+in {
  options.modules.editors.vim = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.editors.vim.enable {
-    my = {
-      packages = with pkgs; [
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
      editorconfig-core-c
      neovim
    ];

-      env.VIMINIT = "let \\$MYVIMRC='\\$XDG_CONFIG_HOME/nvim/init.vim' | source \\$MYVIMRC";
-      alias.vim = "nvim";
-      alias.v = "nvim";
+    # env.VIMINIT = "let \\$MYVIMRC='\\$XDG_CONFIG_HOME/nvim/init.vim' | source \\$MYVIMRC";
+
+    environment.shellAliases = {
+      vim = "nvim";
+      v   = "nvim";
    };
  };
 }
--- a/modules/hardware/audio.nix
+++ b/modules/hardware/audio.nix
@ -0,0 +1,31 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.audio;
+in {
+  options.modules.hardware.audio = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    sound.enable = true;
+    hardware.pulseaudio.enable = true;
+
+    # HACK Prevents ~/.esd_auth files by disabling the esound protocol module
+    #      for pulseaudio, which I likely don't need. Is there a better way?
+    hardware.pulseaudio.configFile =
+      let inherit (pkgs) runCommand pulseaudio;
+          paConfigFile =
+            runCommand "disablePulseaudioEsoundModule"
+              { buildInputs = [ pulseaudio ]; } ''
+                mkdir "$out"
+                cp ${pulseaudio}/etc/pulse/default.pa "$out/default.pa"
+                sed -i -e 's|load-module module-esound-protocol-unix|# ...|' "$out/default.pa"
+              '';
+      in mkIf config.hardware.pulseaudio.enable
+        "${paConfigFile}/default.pa";
+
+    user.extraGroups = [ "audio" ];
+  };
+}
--- a/modules/hardware/bluetooth.nix
+++ b/modules/hardware/bluetooth.nix
@ -0,0 +1,32 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let hwCfg = config.modules.hardware;
+    cfg = hwCfg.bluetooth;
+in {
+  options.modules.hardware.bluetooth = {
+    enable = mkBoolOpt false;
+    audio.enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    { hardware.bluetooth.enable = true; }
+
+    (mkIf cfg.audio.enable {
+      hardware.pulseaudio = {
+        # NixOS allows either a lightweight build (default) or full build of
+        # PulseAudio to be installed.  Only the full build has Bluetooth
+        # support, so it must be selected here.
+        package = pkgs.pulseaudioFull;
+        # Enable additional codecs
+        extraModules = [ pkgs.pulseaudio-modules-bt ];
+      };
+
+      hardware.bluetooth.extraConfig = ''
+        [General]
+        Enable=Source,Sink,Media,Socket
+      '';
+    })
+  ]);
+}
--- a/modules/hardware/ergodox.nix
+++ b/modules/hardware/ergodox.nix
@ -0,0 +1,19 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.ergodox;
+in {
+  options.modules.hardware.ergodox = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = [ pkgs.teensy-loader-cli ];
+    # 'teensyload FILE' to load a new config into the ergodox
+    environment.shellAliases.teensyload =
+      "sudo teensy-loader-cli -w -v --mcu=atmega32u4";
+    # Make right-alt the compose key, so ralt+a+a = å or ralt+o+/ = ø
+    services.xserver.xkbOptions = "compose:ralt";
+  };
+}
--- a/modules/hardware/fs.nix
+++ b/modules/hardware/fs.nix
@ -0,0 +1,46 @@
+{ config, options, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.fs;
+in {
+  options.modules.hardware.fs = {
+    enable = mkBoolOpt false;
+    zfs.enable = mkBoolOpt false;
+    ssd.enable = mkBoolOpt false;
+    # TODO automount.enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    {
+      programs.udevil.enable = true;
+
+      # Support for more filesystems, mostly to support external drives
+      environment.systemPackages = with pkgs; [
+        sshfs
+        exfat
+        ntfs3g
+        hfsprogs
+      ];
+    }
+
+    (mkIf (!cfg.zfs.enable && cfg.ssd.enable) {
+      services.fstrim.enable = true;
+    })
+
+    (mkIf cfg.zfs.enable (mkMerge [
+      {
+        boot.loader.grub.copyKernels = true;
+        boot.supportedFilesystems = [ "zfs" ];
+        boot.zfs.devNodes = "/dev/disk/by-partuuid";
+        services.zfs.autoScrub.enable = true;
+      }
+
+      (mkIf cfg.ssd.enable {
+        # Will only TRIM SSDs; skips over HDDs
+        services.fstrim.enable = false;
+        services.zfs.trim.enable = true;
+      })
+    ]))
+  ]);
+}
--- a/modules/hardware/nvidia.nix
+++ b/modules/hardware/nvidia.nix
@ -0,0 +1,25 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.nvidia;
+in {
+  options.modules.hardware.nvidia = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    hardware.opengl.enable = true;
+
+    services.xserver.videoDrivers = [ "nvidia" ];
+
+    environment.systemPackages = with pkgs; [
+      # Respect XDG conventions, damn it!
+      (writeScriptBin "nvidia-settings" ''
+        #!${stdenv.shell}
+        mkdir -p "$XDG_CONFIG_HOME/nvidia"
+        exec ${config.boot.kernelPackages.nvidia_x11.settings}/bin/nvidia-settings --config="$XDG_CONFIG_HOME/nvidia/settings"
+      '')
+    ];
+  };
+}
--- a/modules/hardware/razer.nix
+++ b/modules/hardware/razer.nix
@ -0,0 +1,22 @@
+# modules/hardware/razer.nix --- support for razer devices
+
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.razer;
+in {
+  options.modules.hardware.razer = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    hardware.openrazer.enable = true;
+
+    user.extraGroups = [ "plugdev" ];
+
+    environment.systemPackages = with pkgs; [
+      # TODO Install polychromatic
+    ];
+  };
+}
--- a/modules/hardware/sensors.nix
+++ b/modules/hardware/sensors.nix
@ -0,0 +1,14 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.sensors;
+in {
+  options.modules.hardware.sensors = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    user.packages = [ pkgs.lm_sensors ];
+  };
+}
--- a/modules/hardware/wacom.nix
+++ b/modules/hardware/wacom.nix
@ -0,0 +1,25 @@
+{ options, config, lib, pkgs, ... }:
+
+with lib;
+with lib.my;
+let cfg = config.modules.hardware.wacom;
+in
+{
+  options.modules.hardware.wacom = {
+    enable = mkBoolOpt false;
+  };
+
+  config = mkIf cfg.enable {
+    # For my intuos4 pro. Doesn't work for cintiqs.
+    services.xserver.wacom.enable = true;
+    # TODO Move this to udev
+    system.userActivationScripts.wacom = ''
+      # lock tablet to main display
+      if xinput list --id-only "Wacom Intuos Pro S Pen stylus" 2>&1 >/dev/null; then
+        xinput map-to-output $(xinput list --id-only "Wacom Intuos Pro S Pen stylus") DVI-I-1
+        xinput map-to-output $(xinput list --id-only "Wacom Intuos Pro S Pen eraser") DVI-I-1
+        xinput map-to-output $(xinput list --id-only "Wacom Intuos Pro S Pen cursor") DVI-I-1
+      fi
+    '';
+  };
+}
--- a/modules/media/default.nix
+++ b/modules/media/default.nix
@ -1,9 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./mpv.nix
-    # ./ncmpcpp.nix
-    ./spotify.nix
-  ];
-}
--- a/modules/options.nix
+++ b/modules/options.nix
@ -0,0 +1,79 @@
+{ config, options, lib, home-manager, ... }:
+
+with lib;
+with lib.my;
+{
+  options = {
+    user = mkOpt types.attrs {};
+
+    home = with types; {
+      file       = mkOpt' attrs {} "Files to place directly in $HOME";
+      configFile = mkOpt' attrs {} "Files to place in $XDG_CONFIG_HOME";
+      dataFile   = mkOpt' attrs {} "Files to place in $XDG_DATA_HOME";
+    };
+
+    env = mkOption {
+      type = with types; attrsOf (oneOf [ str path (listOf (either str path)) ]);
+      apply = mapAttrs
+        (n: v: if isList v
+               then concatMapStringsSep ":" (x: toString x) v
+               else (toString v));
+      default = {};
+      description = "TODO";
+    };
+  };
+
+  config = {
+    user = {
+      description = "The primary user account";
+      extraGroups = [ "wheel" ];
+      isNormalUser = true;
+      name = let name = builtins.getEnv "USER"; in
+             if elem name [ "" "root" ]
+             then "hlissner" else name;
+      uid = 1000;
+    };
+
+    # Install user packages to /etc/profiles instead. Necessary for
+    # nixos-rebuild build-vm to work.
+    home-manager = {
+      useUserPackages = true;
+
+      # I only need a subset of home-manager's capabilities. That is, access to
+      # its home.file, home.xdg.configFile and home.xdg.dataFile so I can deploy
+      # files easily to my $HOME, but 'home-manager.users.hlissner.home.file.*'
+      # is much too long and harder to maintain, so I've made aliases in:
+      #
+      #   home.file        ->  home-manager.users.hlissner.home.file
+      #   home.configFile  ->  home-manager.users.hlissner.home.xdg.configFile
+      #   home.dataFile    ->  home-manager.users.hlissner.home.xdg.dataFile
+      users.${config.user.name} = {
+        home = {
+          file = mkAliasDefinitions options.home.file;
+          # Necessary for home-manager to work with flakes, otherwise it will
+          # look for a nixpkgs channel.
+          stateVersion = config.system.stateVersion;
+        };
+        xdg = {
+          configFile = mkAliasDefinitions options.home.configFile;
+          dataFile   = mkAliasDefinitions options.home.dataFile;
+        };
+      };
+    };
+
+    users.users.${config.user.name} = mkAliasDefinitions options.user;
+
+    nix = let users = [ "root" config.user.name ]; in {
+      trustedUsers = users;
+      allowedUsers = users;
+    };
+
+    # must already begin with pre-existing PATH. Also, can't use binDir here,
+    # because it contains a nix store path.
+    env.PATH = [ "$XDG_CONFIG_HOME/dotfiles/bin" "$PATH" ];
+
+    environment.extraInit =
+      concatStringsSep "\n"
+        (mapAttrsToList (n: v: "export ${n}=\"${v}\"") config.env);
+  };
+}
--- a/modules/services/calibre.nix
+++ b/modules/services/calibre.nix
@ -1,15 +1,16 @@
-{ config, options, pkgs, lib, ... }:
+{ options, config, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.services.calibre;
+in {
  options.modules.services.calibre = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.services.calibre.enable {
+  config = mkIf cfg.enable {
    services.calibre-server.enable = true;
+
    networking.firewall.allowedTCPPorts = [ 8080 ];
  };
 }
--- a/modules/services/default.nix
+++ b/modules/services/default.nix
@ -1,17 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    # ./calibre-server.nix
-    ./docker.nix
-    # ./gitea.nix
-    # ./jellyfin.nix
-    # ./keybase.nix
-    # ./mpd.nix
-    # ./nginx.nix
-    # ./plex.nix
-    # ./ssh.nix
-    ./syncthing.nix
-    # ./transmission.nix
-  ];
-}
--- a/modules/services/docker.nix
+++ b/modules/services/docker.nix
@ -1,23 +1,25 @@
-{ config, options, pkgs, lib, ... }:
+{ options, config, lib, pkgs, ... }:
+
 with lib;
-{
+with lib.my;
+let cfg = config.modules.services.docker;
+in {
  options.modules.services.docker = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-    };
+    enable = mkBoolOpt false;
  };

-  config = mkIf config.modules.services.docker.enable {
-    my = {
-      packages = with pkgs; [ docker docker-compose ];
+  config = mkIf cfg.enable {
+    user.packages = with pkgs; [
+      docker
+      docker-compose
+    ];

    env.DOCKER_CONFIG = "$XDG_CONFIG_HOME/docker";
    env.MACHINE_STORAGE_PATH = "$XDG_DATA_HOME/docker/machine";

    user.extraGroups = [ "docker" ];
-      zsh.rc = lib.readFile <config/docker/aliases.zsh>;
-    };
+
+    modules.shell.zsh.rcFiles = [ "${configDir}/docker/aliases.zsh" ];

    virtualisation = {
      docker = {
--- a/Show more
+++ b/Show more