{ self, config, lib, pkgs, ... }:
let inherit (lib) fileContents;
in
{
  imports = [ ../cachix ];

  nix.systemFeatures = [ "nixos-test" "benchmark" "big-parallel" "kvm" ];

  environment = {
    systemPackages = with pkgs; [
      binutils
      coreutils
      dnsutils
      dosfstools
      git
      bottom
      gptfdisk
      iputils
      jq
      manix
      moreutils
      nix-index
      cached-nix-shell
      nmap
      ripgrep
      skim
      tealdeer
      usbutils
      utillinux
      whois
      iftop
      wget
      curl
      exa
      bat
      fd
      ag
      tcpdump
      mtr
      file
      lsof
      atool
      inotify-tools
      strace
      zip
      unzip
      rsync
      tmux
      pwgen
      glow
      gitAndTools.gitFull
      pinentry_gnome
      pass
      less
      gdb
      xxd
      kitty
      taskwarrior
      gnupg
      syncthing
      dijo
      #kdeconnect
      #ssb-patchwork
      libreoffice
      fontconfig
      pandoc
    ];

    shellInit = ''
      export STARSHIP_CONFIG=${
        pkgs.writeText "starship.toml"
        (fileContents ./starship.toml)
      }
    '';

    shellAliases =
      let ifSudo = lib.mkIf config.security.sudo.enable;
      in
      {
        # quick cd
        ".." = "cd ..";
        "..." = "cd ../..";
        "...." = "cd ../../..";
        "....." = "cd ../../../..";

        # modern cli tools 
        ls = "exa";
        l = "ls";
        tree = "ls --tree";
        cat = "bat";
        unzip = "aunpack";
        copy = "xclip -selection clipboard";
        paste = "xclip -selection clipboard -o";

        # task warrior
        t = "task";
        ta = "task add";
        tm = "task modify";
        te = "task edit";
        ts = "task sync";

        scrot = "scrot ~/screenshots/%b%d::%H%M%S.png";

        # git
        g = "git";

        # grep
        grep = "rg";
        gi = "grep -i";

        # internet ip
        myip = "dig +short myip.opendns.com @208.67.222.222 2>&1";

        # nix
        n = "nix";
        np = "n profile";
        ni = "np install";
        nr = "np remove";
        ns = "n search --no-update-lock-file";
        nf = "n flake";
        nepl = "n repl '<nixpkgs>'";
        srch = "ns nixos";
        orch = "ns override";
        nrb = ifSudo "sudo nixos-rebuild switch --flake '/etc/nixos/#curve'";
        nrt = ifSudo "sudo nixos-rebuild test --flake '/etc/nixos/#curve'";
        nedit = "cd /etc/nixos; vim";
        ncd = "cd  /etc/nixos";
        mn = ''
          manix "" | grep '^# ' | sed 's/^# \(.*\) (.*/\1/;s/ (.*//;s/^# //' | sk --preview="manix '{}'" | xargs manix
        '';

        # fix nixos-option
        nixos-option = "nixos-option -I nixpkgs=${self}/lib/compat";

        # sudo
        s = ifSudo "sudo -E ";
        pls = ifSudo "s";
        si = ifSudo "sudo -i";
        se = ifSudo "sudoedit";

        # top
        top = "btm";

        # systemd
        ctl = "systemctl";
        stl = ifSudo "s systemctl";
        utl = "systemctl --user";
        ut = "systemctl --user start";
        un = "systemctl --user stop";
        up = ifSudo "s systemctl start";
        dn = ifSudo "s systemctl stop";
        jtl = "journalctl";

        # quick ssh
        sm = "ssh mossnet.lan";
        ss = "ssh sealight.xyz";
      };
  };

  fonts = {
    fonts = with pkgs; [ powerline-fonts dejavu_fonts ];
    fontconfig.defaultFonts = {
      monospace = [ "DejaVu Sans Mono for Powerline" ];
      sansSerif = [ "DejaVu Sans" ];
    };
  };

  nix = {
    autoOptimiseStore = true;
    gc.automatic = true;
    optimise.automatic = true;
    useSandbox = true;
    allowedUsers = [ "@wheel" ];
    trustedUsers = [ "root" "@wheel" ];
    extraOptions = ''
      min-free = 536870912
      keep-outputs = true
      keep-derivations = true
      fallback = true
    '';
  };

  programs.bash = {
    promptInit = ''
      eval "$(${pkgs.starship}/bin/starship init bash)"
    '';
    interactiveShellInit = ''
      flakify() {
        if [ ! -e flake.nix ]; then
          nix flake new -t github:nix-community/nix-direnv .
        elif [ ! -e .envrc ]; then
          echo "use flake" > .envrc
          direnv allow
        fi
        vim flake.nix
      }

      eval "$(${pkgs.direnv}/bin/direnv hook bash)"
    '';
    enableCompletion = true;
  };

  services.devmon.enable = true;

  # For rage encryption, all hosts need a ssh key pair
  services.openssh = {
    enable = true;
    openFirewall = lib.mkDefault false;
  };

  programs.gnupg.agent.enable = true;
  #programs.gnupg.agent.pinentryFlavor = "curses";
  programs.gnupg.agent.pinentryFlavor = "gnome3";

  services.earlyoom.enable = true;
}