modularize steam

sys/modules/default.nix

@@ -14,5 +14,6 @@
     ./users.nix
     ./bluetooth.nix
     ./net.nix
+    ./steam.nix
   ];
 }

sys/modules/steam.nix

@@ -0,0 +1,31 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.local.sys.steam;
+in {
+  options.local.sys.steam = {
+    enable = mkEnableOption "steam settings";
+  };
+  config = mkIf cfg.enable {
+    programs.steam = {
+      enable = true;
+      remotePlay.openFirewall = true;
+      dedicatedServer.openFirewall = true;
+      localNetworkGameTransfers.openFirewall = true;
+    };
+
+    environment = {
+      systemPackages = with pkgs;
+        [
+          protontricks
+          protonup
+          protonup-ng
+          winetricks
+        ];
+    };
+  };
+}

sys/platforms/posixlycorrect/default.nix

@@ -19,6 +19,7 @@
     graphics.enable = true;
     virtualisation.enable = true;
     androidSupport.enable = true;
+    steam.enable = true;
 
     users = {
       fabian = {