{lib, stdenv, fetchurl, perl}: stdenv.mkDerivation rec { pname = "ipcalc"; version = "0.41"; src = fetchurl { url = "http://jodies.de/ipcalc-archive/${pname}-${version}.tar.gz"; sha256 = "dda9c571ce3369e5b6b06e92790434b54bec1f2b03f1c9df054c0988aa4e2e8a"; }; buildInputs = [perl]; installPhase = '' mkdir -p $out/bin cp ipcalc $out/bin ''; meta = { description = "Simple IP network calculator"; homepage = "http://jodies.de/ipcalc"; license = lib.licenses.gpl2Plus; platforms = lib.platforms.all; }; }