168 lines
6 KiB
Nix
168 lines
6 KiB
Nix
{pkgs, lib, config, ...}:
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with lib;
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let
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inherit (lib) mkOption mkIf optionals literalExample;
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cfg = config.services.xserver.windowManager.xmonad;
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ghcWithPackages = cfg.haskellPackages.ghcWithPackages;
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packages = self: cfg.extraPackages self ++
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optionals cfg.enableContribAndExtras
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[ self.xmonad-contrib self.xmonad-extras ];
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xmonad-vanilla = pkgs.xmonad-with-packages.override {
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inherit ghcWithPackages packages;
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};
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xmonad-config =
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let
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xmonadAndPackages = self: [ self.xmonad ] ++ packages self;
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xmonadEnv = ghcWithPackages xmonadAndPackages;
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configured = pkgs.writers.writeHaskellBin "xmonad" {
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ghc = cfg.haskellPackages.ghc;
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libraries = xmonadAndPackages cfg.haskellPackages;
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inherit (cfg) ghcArgs;
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} cfg.config;
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in
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pkgs.runCommandLocal "xmonad" {
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nativeBuildInputs = [ pkgs.makeWrapper ];
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} ''
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install -D ${xmonadEnv}/share/man/man1/xmonad.1.gz $out/share/man/man1/xmonad.1.gz
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makeWrapper ${configured}/bin/xmonad $out/bin/xmonad \
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--set NIX_GHC "${xmonadEnv}/bin/ghc" \
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--set XMONAD_XMESSAGE "${pkgs.xorg.xmessage}/bin/xmessage"
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'';
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xmonad = if (cfg.config != null) then xmonad-config else xmonad-vanilla;
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in {
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meta.maintainers = with maintainers; [ lassulus xaverdh ivanbrennan ];
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options = {
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services.xserver.windowManager.xmonad = {
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enable = mkEnableOption "xmonad";
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haskellPackages = mkOption {
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default = pkgs.haskellPackages;
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defaultText = "pkgs.haskellPackages";
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example = literalExample "pkgs.haskell.packages.ghc784";
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description = ''
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haskellPackages used to build Xmonad and other packages.
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This can be used to change the GHC version used to build
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Xmonad and the packages listed in
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<varname>extraPackages</varname>.
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'';
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};
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extraPackages = mkOption {
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type = types.functionTo (types.listOf types.package);
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default = self: [];
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defaultText = "self: []";
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example = literalExample ''
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haskellPackages: [
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haskellPackages.xmonad-contrib
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haskellPackages.monad-logger
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]
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'';
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description = ''
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Extra packages available to ghc when rebuilding Xmonad. The
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value must be a function which receives the attrset defined
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in <varname>haskellPackages</varname> as the sole argument.
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'';
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};
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enableContribAndExtras = mkOption {
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default = false;
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type = lib.types.bool;
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description = "Enable xmonad-{contrib,extras} in Xmonad.";
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};
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config = mkOption {
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default = null;
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type = with lib.types; nullOr (either path str);
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description = ''
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Configuration from which XMonad gets compiled. If no value is
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specified, a vanilla xmonad binary is put in PATH, which will
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attempt to recompile and exec your xmonad config from $HOME/.xmonad.
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This setup is then analogous to other (non-NixOS) linux distributions.
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If you do set this option, you likely want to use "launch" as your
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entry point for xmonad (as in the example), to avoid xmonad's
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recompilation logic on startup. Doing so will render the default
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"mod+q" restart key binding dysfunctional though, because that attempts
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to call your binary with the "--restart" command line option, unless
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you implement that yourself. You way mant to bind "mod+q" to
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<literal>(restart "xmonad" True)</literal> instead, which will just restart
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xmonad from PATH. This allows e.g. switching to the new xmonad binary
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after rebuilding your system with nixos-rebuild.
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If you actually want to run xmonad with a config specified here, but
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also be able to recompile and restart it from a copy of that source in
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$HOME/.xmonad on the fly, you will have to implement that yourself
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using something like "compileRestart" from the example.
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This should allow you to switch at will between the local xmonad and
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the one NixOS puts in your PATH.
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'';
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example = ''
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import XMonad
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import XMonad.Util.EZConfig (additionalKeys)
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import Control.Monad (when)
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import Text.Printf (printf)
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import System.Posix.Process (executeFile)
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import System.Info (arch,os)
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import System.Environment (getArgs)
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import System.FilePath ((</>))
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compiledConfig = printf "xmonad-%s-%s" arch os
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compileRestart resume =
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whenX (recompile True) $
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when resume writeStateToFile
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*> catchIO
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( do
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dir <- getXMonadDataDir
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args <- getArgs
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executeFile (dir </> compiledConfig) False args Nothing
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)
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main = launch defaultConfig
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{ modMask = mod4Mask -- Use Super instead of Alt
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, terminal = "urxvt" }
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`additionalKeys`
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[ ( (mod4Mask,xK_r), compileRestart True)
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, ( (mod4Mask,xK_q), restart "xmonad" True ) ]
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'';
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};
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xmonadCliArgs = mkOption {
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default = [];
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type = with lib.types; listOf str;
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description = ''
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Command line arguments passed to the xmonad binary.
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'';
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};
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ghcArgs = mkOption {
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default = [];
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type = with lib.types; listOf str;
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description = ''
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Command line arguments passed to the compiler (ghc)
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invocation when xmonad.config is set.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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services.xserver.windowManager = {
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session = [{
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name = "xmonad";
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start = ''
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systemd-cat -t xmonad -- ${xmonad}/bin/xmonad ${lib.escapeShellArgs cfg.xmonadCliArgs} &
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waitPID=$!
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'';
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}];
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};
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environment.systemPackages = [ xmonad ];
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};
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}
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