steam: Move to system instead of Flatpak

- Support of gamescope for HDR
- Best integration with udev devices
- Add proton-ge

hosts/perso-desktop/configuration.nix

@@ -20,6 +20,10 @@
   networking.hostName = "nixos-desktop-perso"; # Define your hostname.
 
   modules.system = {
+    apps = {
+      steam.enable = true;
+    };
+
     desktop = {
       plasma.enable = true;
     };

modules/home/apps/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ ... }:
 
 {
   imports = [

modules/home/apps/flatpak/default.nix

@@ -21,7 +21,6 @@ in
       packages = [
         # Gaming
         { appId = "com.discordapp.Discord"; origin = "flathub";  }
-        { appId = "com.valvesoftware.Steam"; origin = "flathub";  }
         { appId = "net.lutris.Lutris"; origin = "flathub";  }
 
         # Pro

modules/system/apps/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  imports = [
+    ./steam
+  ];
+}

modules/system/apps/steam/default.nix

@@ -0,0 +1,22 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+let
+  cfg = config.modules.system.apps.steam;
+in
+{
+  options.modules.system.apps.steam = {
+    enable = mkEnableOption ''
+      Enable steam with my custom configurations
+    '';
+  };
+  config = mkIf cfg.enable {
+    programs.steam = {
+      enable = true;
+      extraPackages = with pkgs; [ gamescope ];
+      extraCompatPackages = with pkgs; [ proton-ge-bin ];
+    };
+
+    hardware.steam-hardware.enable = true;
+  };
+}

modules/system/default.nix

@@ -2,6 +2,7 @@
 
 {
   imports = [
+    ./apps
     ./desktop
     ./hardware
     ./server