{stdenv, fetchurl, m4}: assert m4 != null; stdenv.mkDerivation { name = "bison-1.875"; src = fetchurl { urls = mirror://gnu/bison/bison-1.875.tar.bz2; md5 = "b7f8027b249ebd4dd0cc948943a71af0"; }; buildInputs = [m4]; passthru = { glrSupport = true; }; }