anchor.diff:  { stdenv, fetchFromGitHub, autoconf, automake, libtool
  -, rdma-core, libfabric, libnl, perl, openmpi, openssh
  +, rdma-core, libfabric, libnl, perl, mpi, openssh
   } :
   
   let
  -  version = "1.4.0";
  +  version = "1.5.0";
   
   in stdenv.mkDerivation {
     name = "sos-${version}";
  
positive.code:     fi_info
  #export SHMEM_OFI_PROVIDER=sockets
  #export SHMEM_OFI_FABRIC="127.0.0.1/8"
      export SHMEM_OFI_DOMAIN=lo
      make check TEST_RUNNER="mpiexec -n 2"
    '';
  
negative.code:     "--with-ofi=${libfabric}"
    ];
  
    nativeBuildInputs = [ autoconf automake libtool mpi openssh ];
    buildInputs = [ rdma-core libfabric libnl perl ];
  
    enableParallelBuilding = true;
  