Merge pull request #31850 from herrwiese/evilwm

evilwm: implement NixOS WM module

nixos/modules/services/x11/window-managers/evilwm.nix

@@ -0,0 +1,25 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.xserver.windowManager.evilwm;
+in
+{
+  ###### interface
+  options = {
+    services.xserver.windowManager.evilwm.enable = mkEnableOption "evilwm";
+  };
+
+  ###### implementation
+  config = mkIf cfg.enable {
+    services.xserver.windowManager.session = singleton {
+      name = "evilwm";
+      start = ''
+	${pkgs.evilwm}/bin/evilwm &
+	waitPID=$!
+      '';
+    };
+    environment.systemPackages = [ pkgs.evilwm ];
+  };
+}