{pkgs, piston, ...}: let pkg = pkgs.lua5_4; # latest lua as of now in piston.mkRuntime { language = "lua"; version = pkg.version; aliases = []; run = '' ${pkg}/bin/lua "$@" ''; tests = [ (piston.mkTest { files = { "test.lua" = '' print("OK") ''; }; args = []; stdin = ""; packages = []; main = "test.lua"; }) ]; }