anchor.diff:  { lib
   , fetchFromGitHub
  +, fetchpatch
   , buildBazelPackage
   , buildPythonPackage
   , python
   , setuptools
   , wheel
  +, absl-py
   , tensorflow
   , six
   , numpy
   , decorator
   , cloudpickle
  +, gast
   , hypothesis
   , scipy
   , matplotlib
  
positive.code:     numpy
      decorator
      cloudpickle
    ];
  
    # Listed here:
  
negative.code: }:
  
  let
    version = "0.8.0";
    pname = "tensorflow_probability";
  
    # first build all binaries and generate setup.py using bazel
  