anchor.diff:  , enableSSH ? false
   }:
   
  -let
  -  py = python3.override {
  -    packageOverrides = self: super: {
  -
  -      grandalf = super.grandalf.overridePythonAttrs (oldAttrs: rec {
  -        version = "0.6";
  -        src = fetchFromGitHub {
  -          owner = "bdcht";
  -          repo = "grandalf";
  -          rev = "v${version}";
  -          hash = "sha256-T4pVzjz1WbfBA2ybN4IRK73PD/eb83YUW0BZrBESNLg=";
  -        };
  -        postPatch = ''
  -          substituteInPlace setup.py \
  -            --replace "setup_requires=['pytest-runner',]," ""
  -        '';
  -      });
  -
  -      scmrepo = super.scmrepo.overridePythonAttrs (oldAttrs: rec {
  -        version = "0.0.19";
  -        src = fetchFromGitHub {
  -          owner = "iterative";
  -          repo = "scmrepo";
  -          rev = "refs/tags/${version}";
  -          hash = "sha256-f/KV3NfIumkZcg9r421QhdyPU/274aAU4b78myi+fFY=";
  -        };
  -      });
  -
  -    };
  -  };
  -in
  -with py.pkgs;
  -
  -buildPythonApplication rec {
  +python3.pkgs.buildPythonApplication rec {
     pname = "dvc";
  -  version = "2.10.2";
  +  version = "2.12.0";
     format = "setuptools";
   
     src = fetchFromGitHub {
       owner = "iterative";
       repo = pname;
       rev = version;
  -    hash = "sha256-boaQSg0jajWQZKB5wvcP2musVR2/pifT4pU64Y5hiQ0=";
  +    hash = "sha256-d1Tjqomr8Lcf+X+LZgi0wHlxXBUqHq/nAzDBbrxHAl4=";
     };
   
  -  nativeBuildInputs = with py.pkgs; [
  +  nativeBuildInputs = with python3.pkgs; [
       setuptools-scm
       setuptools-scm-git-archive
     ];
   
  -  propagatedBuildInputs = with py.pkgs; [
  +  propagatedBuildInputs = with python3.pkgs; [
       aiohttp-retry
       appdirs
       colorama
  
positive.code:     distro
      dpath
      dvclive
      dvc-render
      flatten-dict
      flufl_lock
  
negative.code:   ];
  
    postPatch = ''
      substituteInPlace setup.cfg \
        --replace "grandalf==0.6" "grandalf" \
        --replace "scmrepo==0.0.25" "scmrepo" \
        --replace "dvc-data==0.0.16" "dvc-data" \
        --replace "dvc-render==0.0.6" "dvc-render"
      substituteInPlace dvc/daemon.py \
        --subst-var-by dvc "$out/bin/dcv"
    '';
  