anchor.diff:  
   , acl
   , attr
  -, coreutils
  -, gawk
  +, coreutils_small
  +, gawk_small
   , gnugrep
  -, gnused
  +, gnused_small
   , libaio
   , libtirpc
   , liburcu
  
positive.code: 
    mountPath = [
      attr
      coreutils
      gawk
      gnugrep
      gnused
      which
    ];
  
    versionMajor = "5";
    versionMinor = "2";
    version = "${versionMajor}.${versionMinor}";
  in
  stdenv.mkDerivation rec {
  
negative.code:   src = fetchurl {
      url = "https://download.gluster.org/pub/gluster/glusterfs/${versionMajor}/"
        + "${version}/${name}.tar.gz";
      sha256 = "293542b1f43e681741282d1ba2aefe9b501321c782e896f518cca36072414448";
    };
  
    nativeBuildInputs = [
  