I'm so tired of all this crap...

modules/nixos/desktop/cosmic/default.nix

@@ -0,0 +1,32 @@
+{
+  lib,
+  config,
+  namespace,
+  inputs,
+  ...
+}: let
+  inherit (lib) mkIf mkEnableOption mkForce;
+
+  cfg = config.${namespace}.desktop.cosmic;
+in {
+  options.${namespace}.desktop.cosmic = {
+    enable =
+      mkEnableOption "Enable Cosmic desktop"
+      // {
+        default = config.${namespace}.desktop.use == "cosmic";
+      };
+  };
+
+  config = mkIf cfg.enable {
+    services = {
+      displayManager = {
+        cosmic-greeter.enable = true;
+        autoLogin = {
+          enable = true;
+          user = "chris";
+        };
+      };
+      desktopManager.cosmic.enable = true;
+    };
+  };
+}

modules/nixos/desktop/default.nix

@@ -1,18 +1,22 @@
-{ lib, config, namespace, inputs, ... }:
-let
+{
+  lib,
+  config,
+  namespace,
+  inputs,
+  ...
+}: let
   inherit (lib) mkIf mkOption mkEnableOption mkMerge;
   inherit (lib.types) nullOr enum;
 
   cfg = config.${namespace}.desktop;
-in
-{
+in {
   imports = [
     inputs.grub2-themes.nixosModules.default
   ];
 
   options.${namespace}.desktop = {
     use = mkOption {
-      type = nullOr (enum [ "plasma" "gamescope" "gnome" ]);
+      type = nullOr (enum ["plasma" "gamescope" "gnome" "cosmic"]);
       default = null;
       example = "plasma";
       description = "Which desktop to enable";
@@ -20,11 +24,11 @@ in
   };
 
   config = mkMerge [
-    ({
+    {
       services.displayManager = {
         enable = true;
       };
-    })
+    }
 
     # (mkIf (cfg.use != null) {
     #   ${namespace}.desktop.${cfg.use}.enable = true;

systems/x86_64-linux/manwe/default.nix

@@ -20,7 +20,7 @@
       animated = true;
     };
 
-    desktop.use = "plasma";
+    desktop.use = "cosmic";
 
     application = {
       steam.enable = true;