seems right

modules/nixos/desktop/hyprland.nix

@@ -7,31 +7,40 @@
 with lib; let
   cfg = config.desktop.hyprland;
 in {
-  imports = [./misc/sound.nix ./misc/regreet.nix];
+  imports = [./common/pipewire.nix];
   options = {
     desktop.hyprland.enable =
       mkEnableOption "enable hyprland desktop";
   };
   config = mkIf cfg.enable {
     programs.hyprland.enable = true;
-    programs.hyprland.package = pkgs.hyprland;
-    fonts.fontDir.enable = true;
-    security.pam.services.hyprlock = {};
-    security.pam.loginLimits = [
-      {
-        domain = "@users";
-        item = "rtprio";
-        type = "-";
-        value = 1;
-      }
+    environment.systemPackages = with pkgs; [
+      brightnessctl
+      gcr_4
     ];
-    programs.dconf.enable = true;
-    programs.seahorse.enable = true;
-    services.gnome.gnome-keyring.enable = true;
-    services.udisks2.enable = true;
-    services.dbus = {
-      apparmor = "enabled";
-      implementation = "broker";
+    fonts.fontDir.enable = true;
+    security.pam = {
+      services.hyprlock = {};
+      loginLimits = [
+        {
+          domain = "@users";
+          item = "rtprio";
+          type = "-";
+          value = 1;
+        }
+      ];
+    };
+    services = {
+      gnome.gnome-keyring.enable = true;
+      udisks2.enable = true;
+      dbus = {
+        apparmor = "enabled";
+        implementation = "broker";
+      };
+    };
+    programs = {
+      dconf.enable = true;
+      seahorse.enable = true;
     };
     xdg.portal = {
       enable = true;
@@ -39,18 +48,25 @@ in {
         xdg-desktop-portal-hyprland
         xdg-desktop-portal-gtk
       ];
-      config = {
-        common = {
-          default = [
-            "hyprland"
-            "gtk"
-          ];
+      config.common.default = [
+        "hyprland"
+        "gtk"
+      ];
+    };
+
+    programs.regreet.enable = true;
+    services.greetd = {
+      enable = true;
+      vt = 6;
+      settings = {
+        default_session = {
+          command = "${pkgs.cage}/bin/cage -s -m last -- ${pkgs.greetd.regreet}/bin/regreet";
+        };
+        initial_session = {
+          user = "user";
+          command = "Hyprland";
         };
       };
     };
-    services.greetd.settings.initial_session = {
-      user = "user";
-      command = "Hyprland";
-    };
   };
 }

modules/nixos/desktop/misc/regreet.nix

@@ -1,12 +0,0 @@
-{pkgs, ...}: {
-  programs.regreet.enable = true;
-  services.greetd = {
-    enable = true;
-    vt = 6;
-    settings = {
-      default_session = {
-        command = "${pkgs.cage}/bin/cage -s -m last -- ${pkgs.greetd.regreet}/bin/regreet";
-      };
-    };
-  };
-}

modules/nixos/desktop/niri.nix

@@ -7,7 +7,7 @@
 with lib; let
   cfg = config.desktop.niri;
 in {
-  imports = [./misc/sound.nix ./misc/regreet.nix];
+  imports = [./common/pipewire.nix];
   options = {
     desktop.niri.enable =
       mkEnableOption "enable niri desktop";
@@ -52,9 +52,19 @@ in {
         "gtk"
       ];
     };
-    services.greetd.settings.initial_session = {
-      user = "user";
-      command = "${pkgs.niri}/bin/niri-session";
+    programs.regreet.enable = true;
+    services.greetd = {
+      enable = true;
+      vt = 6;
+      settings = {
+        default_session = {
+          command = "${pkgs.cage}/bin/cage -s -m last -- ${pkgs.greetd.regreet}/bin/regreet";
+        };
+        initial_session = {
+          user = "user";
+          command = "${pkgs.niri}/bin/niri-session";
+        };
+      };
     };
   };
 }

modules/nixos/desktop/plasma.nix

@@ -1,6 +1,5 @@
 {
   config,
-  pkgs,
   lib,
   ...
 }:
@@ -8,7 +7,7 @@ with lib; let
   cfg = config.desktop.plasma;
 in {
   imports = [
-    ./misc/sound.nix
+    ./common/pipewire.nix
   ];
   options = {
     desktop.plasma = {
@@ -17,12 +16,13 @@ in {
     };
   };
   config = mkIf cfg.enable {
-    services.displayManager.sddm = {
-      enable = cfg.sddmEnable;
-      wayland.enable = true;
+    services = {
+      desktopManager.plasma6.enable = true;
+      displayManager.sddm = {
+        enable = cfg.sddmEnable;
+        wayland.enable = true;
+      };
     };
-    services.desktopManager.plasma6.enable = true;
-
     fonts.fontDir.enable = true;
   };
 }