Generalize dev/love2d.nix into dev/lua.nix

hosts/kuro/default.nix

@@ -42,6 +42,8 @@
       cc.enable = true;
       common-lisp.enable = true;
       rust.enable = true;
+      # lua.enable = true;
+      # lua.love2d.enable = true;
     };
 
     media = {

modules/dev/default.nix

@@ -9,7 +9,7 @@
     # ./godot.nix
     # ./haskell.nix
     # ./latex.nix
-    # ./love2d.nix
+    ./lua.nix
     # ./node.nix
     ./python.nix
     ./rust.nix

modules/dev/love2d.nix

@@ -1,15 +0,0 @@
-# modules/dev/love2d.nix --- https://love2d.org/
-#
-# Love is my favorite little game engine. I use it often for rapid prototyping
-# when godot is overkill and have the luxury of avoiding JS. I write my Love
-# games in moonscript to get around the idiosynchrosies of lua.
-
-{ pkgs, ... }:
-{
-  my.packages = with pkgs; [
-    love
-    lua
-    luaPackages.moonscript
-    luarocks
-  ];
-}

modules/dev/lua.nix

@@ -0,0 +1,29 @@
+# modules/dev/lua.nix --- https://www.lua.org/
+#
+# I use lua for modding, awesomewm or Love2D for rapid gamedev prototyping (when
+# godot is overkill and I have the luxury of avoiding JS). I write my Love games
+# in moonscript to get around lua's idiosynchrosies. That said, I install love2d
+# on a per-project basis.
+
+{ config, options, lib, pkgs, ... }:
+with lib;
+{
+  options.modules.dev.lua = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+    };
+  };
+
+  config = mkIf config.modules.dev.lua.enable {
+    my = {
+      packages = with pkgs; [
+        lua
+        luaPackages.moonscript
+        luarocks
+      ];
+
+      zsh.rc = ''eval "$(luarocks path --bin)"'';
+    };
+  };
+}