{ stdenv, fetchurl }: let version = "2.5.1"; in stdenv.mkDerivation rec { name = "libgnurx-${version}"; src = fetchurl { url = "mirror://sourceforge/mingw/Other/UserContributed/regex/mingw-regex-${version}/mingw-${name}-src.tar.gz"; sha256 = "0xjxcxgws3bblybw5zsp9a4naz2v5bs1k3mk8dw00ggc0vwbfivi"; }; }