nix: compact audio.nix, applications.nix and login.nix into a singular file

if you are gonna use a system with a desktop you would probably enable
all of them in the first place

flake.nix

@@ -23,10 +23,8 @@
         ./modules/nix.nix
         ./modules/shell.nix
 
-        ./modules/linux/applications.nix
-        ./modules/linux/audio.nix
+        ./modules/linux/desktop.nix
         ./modules/linux/hyprland.nix
-        ./modules/linux/login.nix
         ./modules/linux/stow.nix
         ./modules/linux/users.nix
         ./modules/linux/secureboot.nix

modules/linux/applications.nix

@@ -1,12 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  programs.steam = {
-    extraPackages = [ pkgs.gamescope ];
-    gamescopeSession.enable = true;
-    extest.enable = true;
-  };
-
-  services.flatpak.enable = true;
-
-}

modules/linux/audio.nix

@@ -1,13 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  # Enable sound.
-  security.rtkit.enable = true;
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-    jack.enable = true;
-  };
-}

modules/linux/desktop.nix

@@ -0,0 +1,37 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # Enable sound.
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    jack.enable = true;
+  };
+
+  # Enable display manager w/autologin
+  services.greetd = {
+    enable = true;
+    settings = {
+      initial_session = {
+        command = "${pkgs.hyprland}/bin/Hyprland";
+        user = "nico";
+      };
+      default_session = {
+        command = "${pkgs.greetd.tuigreet}/bin/tuigreet --asterisks --time --greeting 'nyaaa~~'";
+      };
+    };
+  };
+
+  # Applications
+  programs.steam = {
+    # doesn't do anything if steam isn't enabled so safe here
+    extraPackages = [ pkgs.gamescope ];
+    gamescopeSession.enable = true;
+    extest.enable = true;
+  };
+
+  services.flatpak.enable = true;
+}

modules/linux/login.nix

@@ -1,16 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  services.greetd = {
-    enable = true;
-    settings = {
-      initial_session = {
-        command = "${pkgs.hyprland}/bin/Hyprland";
-        user = "nico";
-      };
-      default_session = {
-        command = "${pkgs.greetd.tuigreet}/bin/tuigreet --asterisks --time --greeting 'nyaaa~~'";
-      };
-    };
-  };
-}