Respect muh XDGthoritah

machines/default.nix

@@ -1,6 +1,6 @@
 # ...
 
-{ config, lib, pkgs, ... }:
+{ config, options, lib, pkgs, ... }:
 {
   # Nothing in /tmp should survive a reboot
   boot.tmpOnTmpfs = true;
@@ -36,17 +36,43 @@
     };
   };
 
-  # Obey XDG conventions; a tidy $HOME is a tidy mind.
+
+  ### Universal defaults
+  networking.firewall.enable = true;
+
+  ### 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 = "$HOME/.local/bin";
+    XDG_CACHE_HOME  = "$HOME/.cache";
+    XDG_DATA_HOME   = "$HOME/.local/share";
+    XDG_BIN_HOME    = "$HOME/.local/bin";
   };
 
-  ### Universal defaults
-  networking.firewall.enable = true;
+  # Conform more programs to XDG conventions. The rest are handle 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";
 }

modules/dev/node.nix

@@ -22,5 +22,10 @@
     # Run locally installed bin-script, e.g. n coffee file.coffee
     alias.n  = "PATH=\"$(npm bin):$PATH\"";
     alias.ya = "yarn";
+
+    home.xdg.configFile."npm/config".text = ''
+      cache=$XDG_CACHE_HOME/npm
+      prefix=$XDG_DATA_HOME/npm
+    '';
   };
 }

modules/dev/python.nix

@@ -23,6 +23,8 @@
     env.PYLINTHOME      = "$XDG_DATA_HOME/pylint";
     env.PYLINTRC        = "$XDG_CONFIG_HOME/pylint/pylintrc";
     env.PYTHONSTARTUP   = "$XDG_CONFIG_HOME/python/pythonrc";
+    env.PYTHON_EGG_CACHE = "$XDG_CACHE_HOME/python-eggs";
+    env.JUPYTER_CONFIG_DIR = "$XDG_CONFIG_HOME/jupyter";
 
     zsh.rc = lib.readFile <my/config/python/aliases.zsh>;