anchor.diff:  , pytest
   , nose
   , parameterized
  +, fastprogress
  +, typing-extensions
   }:
   
   buildPythonPackage rec {
  
positive.code:   # The test suite is computationally intensive and test failures are not
    # indicative for package usability hence tests are disabled by default.
    doCheck = false;
  
    # For some reason tests are run as a part of the *install* phase if enabled.
    # Theano writes compiled code to ~/.theano hence we set $HOME.
  
negative.code:     h5py
      arviz
      packaging
      fastprogress
      typing-extensions
    ];
  
    checkInputs = [
  