{stdenv, fetchurl, gfortran}: stdenv.mkDerivation { name = "openmpi-1.4.2"; src = fetchurl { url = http://www.open-mpi.org/software/ompi/v1.4/downloads/openmpi-1.4.2.tar.bz2 ; sha1 = "3e85092433d0e399cc7a51c018f9d13562f78b80"; }; buildInputs = [ gfortran ]; }