Added luaPackages, moved lua sockets and lua filesystem to luaPackages, fixed mudlet deps

pkgs/development/lua-modules/generic/default.nix

@@ -0,0 +1,23 @@
+lua:
+
+{ buildInputs ? [], disabled ? false, ... } @ attrs:
+
+assert !disabled;
+
+lua.stdenv.mkDerivation ({
+
+    preBuild = ''
+      makeFlagsArray=(
+        PREFIX=$out
+        LUA_LIBDIR="$out/lib/lua/${lua.luaversion}"
+        LUA_INC="-I${lua}/include");
+    '';
+  }
+  //
+  attrs
+  //
+  {
+    name = "lua${lua.luaversion}-" + attrs.name;
+    buildInputs = buildInputs ++ [ lua ];
+  }
+)