anchor.diff:  
     buildInputs = [ btrfs-progs ];
   
  -  buildFlags = [ "VERSION=v${version}" ];
  +  buildFlags = [ "VERSION=v${version}" "REVISION=${commit}" ];
   
     BUILDTAGS = []
       ++ optional (btrfs-progs == null) "no_btrfs";
  
positive.code:   buildPhase = ''
      cd go/src/${goPackagePath}
      patchShebangs .
      make binaries
    '';
  
    installPhase = ''
  
negative.code: buildGoPackage rec {
    pname = "containerd";
    version = "1.2.13";
    # git commit for the above version's tag
    commit = "7ad184331fa3e55e52b890ea95e65ba581ae3429";
  
    src = fetchFromGitHub {
      owner = "containerd";
  