anchor.diff:  { stdenv, buildPythonPackage, fetchPypi, twine, pbr, click, click-completion, validate-email,
  -pendulum, ptable, requests, inquirer, pythonOlder, pytest, pytestcov, pytest-mock, faker, factory_boy }:
  +pendulum, ptable, requests, inquirer, pythonOlder, pytest, pytestcov, pytest-mock, faker, factory_boy,
  +setuptools }:
   
   
   buildPythonPackage rec {
  
positive.code:   '';
  
    propagatedBuildInputs = [
      click
      click-completion
      validate-email
  
negative.code: 
    postPatch = ''
     substituteInPlace requirements.txt \
       --replace "pendulum==2.0.4" "pendulum>=2.0.4" \
       --replace "click-completion==0.5.0" "click-completion>=0.5.0" \
       --replace "pbr==5.1.2" "pbr>=5.1.2" \
       --replace "inquirer==2.5.1" "inquirer>=2.5.1"
  