{ stdenv , elvish , substituteAll }: stdenv.mkDerivation { pname = "elvish-simple-test"; inherit (elvish) version; nativeBuildInputs = [ elvish ]; dontInstall = true; buildCommand = '' elvish ${substituteAll { src = ./expect-version.elv; inherit (elvish) version; }} touch $out ''; meta.timeout = 10; }