{ stdenv, fetchurl, gmp }: stdenv.mkDerivation rec { pname = "cln"; version = "1.3.4"; src = fetchurl { url = "${meta.homepage}${pname}-${version}.tar.bz2"; sha256 = "0j5p18hwbbrchsdbnc8d2bf9ncslhflri4i950gdnq7v6g2dg69d"; }; buildInputs = [ gmp ]; meta = with stdenv.lib; { description = "C/C++ library for numbers, a part of GiNaC"; homepage = http://www.ginac.de/CLN/; license = licenses.gpl2; platforms = platforms.unix; # Once had cygwin problems }; }