add some open source games to the list for posterity

modules/options.nix

@@ -13,6 +13,7 @@
       hacking.enable = lib.mkEnableOption "enables hacking packages";
       mudding.enable = lib.mkEnableOption "enables mudding packages";
       gaming.enable = lib.mkEnableOption "enables gaming packages";
+      os-gaming.enable = lib.mkEnableOption "enables some neat but obscure open-source games";
       appdevel.enable = lib.mkEnableOption "enables app development in flutter";
       vr.enable = lib.mkEnableOption "enables VR utilities";
       art.enable = lib.mkEnableOption "enabled graphical art stuff";
@@ -65,6 +66,7 @@
       hacking.enable = lib.mkDefault false;
       mudding.enable = lib.mkDefault false;
       gaming.enable = lib.mkDefault false;
+      os-gaming.enable = lib.mkDefault false;
       appdevel.enable = lib.mkDefault false;
       vr.enable = lib.mkDefault false;
       art.enable = lib.mkDefault false;

modules/software/programs.nix

@@ -122,13 +122,27 @@
         steamtinkerlaunch
         prismlauncher
         mudlet
+        gamescope
+        gamemode
+        r2modman
+      ]
+      else []
+    )
+    ++ (
+      if config.module.os-gaming.enable
+      then [
         widelands
         wesnoth
         ufoai
         cataclysm-dda
-        gamescope
-        gamemode
-        r2modman
+        redeclipse
+        megaglest
+        # savagexr if it existed
+        superTuxKart
+        openra
+        opentdd
+        xonotic
+        supermariowar
       ]
       else []
     )