anchor.diff:  with stdenv.lib;
   
   let
  -  version = "2.1.0";
  +  version = "2.2.0";
     versmm = versions.major version + "." + versions.minor version;
     name = "hwloc-${version}";
   
  
positive.code: 
    src = fetchurl {
      url = "https://www.open-mpi.org/software/hwloc/v${versmm}/downloads/${name}.tar.bz2";
      sha256 = "0qh8s7pphz0m5cwb7liqmc17xzfs23xhz5wn24r6ikvjyx99fhhr";
    };
  
    configureFlags = [
  
negative.code: 
      # https://www.open-mpi.org/projects/hwloc/license.php
      license = licenses.bsd3;
      homepage = "https://www.open-mpi.org/projects/hwloc/";
      maintainers = with maintainers; [ fpletz markuskowa ];
      platforms = platforms.all;
    };
  