added dwm

hosts/vali/mars/dwm/dwm.nix

@@ -0,0 +1,22 @@
+{ pkgs, lib, config, callPackage, ... }:
+with lib; let
+  username = config.modules.other.system.username;
+  cfg = config.modules.programs.dwm;
+in {
+  options.modules.programs.dwm.enable = mkEnableOption "dwm";
+
+  config = mkIf cfg.enable {
+    services.xserver = {
+      enable = true;
+      xkb.layout =  "de";
+      windowManager.dwm = {
+          enable = true;
+          package = pkgs.dwm.overrideAttrs.src = ./dwm-6.5
+      };
+      displayManager = {
+          gdm.enable = true;
+          defaultSession = "none+dwm";
+      };
+    };
+  };
+}