anchor.diff:      poetry
     ];
   
  -  buildInputs = [ jaxlib ];
  +  buildInputs = [
  +    jaxlib
  +  ];
   
     propagatedBuildInputs = [
       cloudpickle
  
positive.code: 
    # The cloudpickle constraint is too strict. wandb is marked as an optional
    # dependency but `buildPythonPackage` doesn't seem to respect that setting.
    postPatch = ''
      substituteInPlace pyproject.toml \
        --replace 'cloudpickle = "^1.5.0"' 'cloudpickle = "*"' \
        --replace 'wandb = { version = "^0.12.10", optional = true }' ""
    '';
  
negative.code: { lib
  , buildPythonPackage
  , cloudpickle
  , deepdish
  , deepmerge
  , dm-haiku
  , fetchFromGitHub
  , jaxlib
  , poetry
  , pytestCheckHook
  , pythonOlder
  , pyyaml
  , sh
  , tables
  