args: args.stdenv.mkDerivation { name = "gsl-1.9"; src = args.fetchurl { url = ftp://ftp.gnu.org/gnu/gsl/gsl-1.9.tar.gz; sha256 = "0l12js65c1qf3s7gmgay6gj5nbs6635py41dj8nk3hlp95wcdlgw"; }; buildInputs =(with args; []); meta = { description = "numerical library (>1000 functions)"; homepage = http://www.gnu.org/software/gsl; license = "GPL2"; }; }