anchor.diff:    src = fetchPyPi {
       package = "borgbackup";
       inherit version;
  -    sha256 = "203353a299b6ea0c092a1f23b6bb5414a0b795712c213c68f7a1f4c24be131d1";
  +    sha256 = "6902563c447c4f378ff1a13167f83d15eb60a02316a06368a539b7ff3d88aeb9";
     };
   
     BORG_LZ4_PREFIX = lz4;
     BORG_OPENSSL_PREFIX = openssl;
  +
  +  nativeBuildInputs = [
  +    setuptools-scm
  +  ];
   
     buildInputs = [
       acl
  
positive.code: }:
  
  let
    version = "1.0.7";
  in
  buildPythonPackage rec {
    name = "borgbackup-${version}";
  
negative.code: { stdenv
  , buildPythonPackage
  , fetchPyPi
  , setuptools-scm
  
  , acl
  , lz4
  