{stdenv, fetchurl}: stdenv.mkDerivation { name = "gnum4-1.4.9"; src = fetchurl { url = ftp://ftp.nluug.nl/pub/gnu/m4/m4-1.4.9.tar.bz2; sha256 = "0a9xgknp29zdhpp7xn3bfcxdc0wn2rzvjfdksz5ym82b6y397qm8"; }; }