anchor.diff:  { stdenv, fetchFromGitHub, pkgconfig, libtool, curl
   , python, munge, perl, pam, openssl, zlib
   , ncurses, libmysqlclient, gtk2, lua, hwloc, numactl
  -, readline, freeipmi, libssh2, xorg, lz4
  +, readline, freeipmi, libssh2, xorg, lz4, rdma-core
   # enable internal X11 support via libssh2
   , enableX11 ? true
   }:
  
positive.code:       "--with-munge=${munge}"
        "--with-ssl=${openssl.dev}"
        "--with-zlib=${zlib}"
        "--sysconfdir=/etc/slurm"
      ] ++ (optional (gtk2 == null)  "--disable-gtktest")
        ++ (optional enableX11 "--with-libssh2=${libssh2.dev}")
  
negative.code:   nativeBuildInputs = [ pkgconfig libtool ];
    buildInputs = [
      curl python munge perl pam openssl zlib
        libmysqlclient ncurses gtk2 lz4 rdma-core
        lua hwloc numactl readline freeipmi
    ] ++ stdenv.lib.optionals enableX11 [ libssh2 xorg.xauth ];
  
  