fix(stylix): disable GUI toolkits & DEs when no GUI is requested

Further reduce derivation size

modules/hm/default.nix

@@ -27,6 +27,16 @@ in
         targets.nixvim.enable = false; # I prefer styling it myself
       };
     })
+    (lib.mkIf (cfg.enable && cfg.styling.enable && !cfg.gui.enable) {
+      # Stylix disable graphical targets when no GUI is requested
+      stylix.targets = {
+        gtk.enable = false;
+        qt.enable = false;
+        gnome.enable = false;
+        kde.enable = false;
+        xresources.enable = false;
+      };
+    })
     (lib.mkIf cfg.enable {
       # Add gopass if pass is enabled
       home.packages = lib.optional config.programs.password-store.enable pkgs.gopass;

modules/hm/options.nix

@@ -209,8 +209,6 @@ in
                   options.extraPackages = mkExtraPackagesOption "Rust" [
                     [ "cargo-insta" ] # snapshot testing
                     [ "cargo-nextest" ] # better testing harness
-                    [ "cargo-udeps" ] # check for unused dependencies (requires nightly)
-                    [ "cargo-watch" ] # watch for file changes and run commands
                   ];
                 };
               };