Version 'latest' is not valid according to PEP 440.

[jarint]

In 'setup.py':

line 5 throws an error due to a deprecated version identifier.

Full error message:

          ********************************************************************************
          The version specified is not a valid version according to PEP 440.
          This may not work as expected with newer versions of
          setuptools, pip, and PyPI.
  
          This deprecation is overdue, please update your project and remove deprecated
          calls to avoid build errors in the future.
  
          See https://peps.python.org/pep-0440/ for details.
          ********************************************************************************

PEP 440 version specification must follow this regex:

         [N!]N(.N)*[{a|b|rc}N][.postN][.devN]

details can be found at https://peps.python.org/pep-0440/ . Cannot install repo through pip without fix.