Assertion throws err message on fail in buildLuaPackage

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

@@ -2,9 +2,10 @@ lua:
 
 { buildInputs ? [], disabled ? false, ... } @ attrs:
 
-assert !disabled;
-
-lua.stdenv.mkDerivation ({
+if disabled then
+  throw "${attrs.name} not supported by interpreter lua-${lua.luaversion}"
+else
+  lua.stdenv.mkDerivation ({
 
       preBuild = ''
         makeFlagsArray=(
@@ -20,4 +21,4 @@ lua.stdenv.mkDerivation ({
       name = "lua${lua.luaversion}-" + attrs.name;
       buildInputs = buildInputs ++ [ lua ];
     }
-)
+  )

pkgs/top-level/lua-packages.nix

@@ -8,7 +8,6 @@
 {fetchurl, stdenv, lua}:
 
 let self = _self; _self = with self; {
-
   inherit (stdenv.lib) maintainers;
 
   #define build lua package function