feat: add COSMIC desktop environment and greeter configuration

home/panotaka/Bellerophon.nix

@@ -10,7 +10,7 @@
     #
     # FIXME(starter): add or remove any optional config directories or files ehre
     common/optional/browsers
-    common/optional/desktops/gnome
+    common/optional/desktops/cosmic
     common/optional/desktops/gnome/zenbook-screen.nix
     common/optional/comms
     common/optional/media

home/panotaka/common/optional/desktops/cosmic/default.nix

@@ -0,0 +1,11 @@
+{
+  config,
+  pkgs,
+  ...
+}: {
+  # Home Manager module for enabling the COSMIC desktop environment
+  # Follows the pattern of gnome/kde modules
+
+  # Optionally, add more configuration here as COSMIC matures
+  # e.g., settings, extensions, etc.
+}

hosts/common/optional/cosmic-greeter.nix

@@ -0,0 +1,4 @@
+{pkgs, ...}: {
+  # Enable the COSMIC Greeter (Display Manager)
+  services.displayManager.cosmic-greeter.enable = true;
+}

hosts/common/optional/cosmic.nix

@@ -0,0 +1,9 @@
+{
+  pkgs,
+  lib,
+  ...
+}: {
+  # Enable the COSMIC desktop environment
+  services.desktopManager.cosmic.enable = true;
+  environment.sessionVariables.NIXOS_OZONE_WL = "1";
+}

hosts/nixos/Bellerophon/default.nix

@@ -74,8 +74,8 @@
       "hosts/common/optional/services/ollama.nix"
       "hosts/common/optional/services/docker.nix"
       "hosts/common/optional/audio.nix" # pipewire and cli controls
-      "hosts/common/optional/gnome.nix"
+      "hosts/common/optional/cosmic.nix"
-      "hosts/common/optional/gdm.nix"
+      "hosts/common/optional/cosmic-greeter.nix"
       "hosts/common/optional/flatpak.nix"
       "hosts/common/optional/thermal-management.nix"
       "hosts/common/optional/system76-scheduler.nix"