{ stdenv, fetchurl }: stdenv.mkDerivation { name = "mtdev-1.1.0"; src = fetchurl { url = "http://bitmath.org/code/mtdev/mtdev-1.1.0.tar.gz"; sha256 = "14mky2vrzgy3x6k3rwkkpqkqyivbr6ym99gj5jmil9fqa9644lw4"; }; }