split up gaming modules and add 2d emulators with retroarch

provision/hosts/bulwark/configuration.nix

@@ -86,6 +86,8 @@
     };
     gaming = {
       steam.enable = true;
+      emulation.enable = true;
+      misc.enable = true;
     };
     services = {
       jellyfin.enable = false;

provision/hosts/kestrel/configuration.nix

@@ -91,6 +91,8 @@
     };
     gaming = {
       steam.enable = true;
+      emulation.enable = true;
+      misc.enable = true;
     };
     services = {
       jellyfin.enable = false;

provision/modules/gaming/default.nix

@@ -1,4 +1,4 @@
 { ... }:
 {
-  imports = [ ./steam.nix ];
+  imports = [ ./steam.nix ./misc.nix ./emulation.nix ];
 }

provision/modules/gaming/emulation.nix

@@ -0,0 +1,25 @@
+{ config, lib, pkgs, user, ... }:
+
+let cfg = config.modules.gaming.emulation;
+in {
+  options.modules.gaming.emulation.enable = lib.mkEnableOption "emulation";
+  config = lib.mkIf cfg.enable {
+
+    environment.systemPackages = with pkgs; [ 
+      yuzu-archive
+      citra-archive
+      dolphin-emu
+      ppsspp
+      mgba
+      ares
+      (retroarch.override {
+        cores = with libretro; [
+          nestopia
+          snes9x
+          mgba
+          melonds
+        ];
+      })
+    ];
+  };
+}

provision/modules/gaming/misc.nix

@@ -0,0 +1,15 @@
+{ config, lib, pkgs, user, ... }:
+
+let cfg = config.modules.gaming.misc;
+in {
+  options.modules.gaming.misc.enable = lib.mkEnableOption "misc";
+  config = lib.mkIf cfg.enable {
+
+    environment.systemPackages = with pkgs; [ 
+      sunshine
+      moonlight-qt
+      prismlauncher
+      jdk17
+    ];
+  };
+}

provision/modules/gaming/steam.nix

@@ -18,17 +18,6 @@ in {
       steam
       steamtinkerlaunch
       gamescope
-      yuzu-archive
-      citra-archive
-      dolphin-emu
-      ppsspp
-      mgba
-      ares
-      sunshine
-      moonlight-qt
-      prismlauncher
-      jdk17
     ];
   };
-
 }