I have a Python project (let's call it Project A) which contains a setup.py file as following:

from setuptools import setup
from setuptools import find_namespace_packages
from setuptools.command.develop import develop
from setuptools.command.install import install


def post_installation():
    import nltk
    nltk.download('punkt')
    nltk.download('wordnet')
    nltk.download('averaged_perceptron_tagger')


class PostDevelopCommand(develop):
    """Post-installation for development mode."""

    def run(self):
        develop.run(self)
        post_installation()


class PostInstallCommand(install):
    """Post-installation for installation mode."""

    def run(self):
        install.run(self)
        post_installation()


# Setup script
setup(
    name='my-project-a',
    version='1.2.3',
    description='My project A',
    long_description=open('README.md').read(),
    long_description_content_type='text/markdown',
    packages=find_namespace_packages(exclude=['tests', 'tests.*']),
    install_requires=list(open('requirements.txt')),
    test_suite='tests',
    cmdclass={
        'develop': PostDevelopCommand,
        'install': PostInstallCommand
    }
)

And then, I used twine to deploy it to AWS Code Artifact in a GitHub action:

  - name: "Publish to AWS CodeArtifact"
        if: env.BUMPED == 'TRUE'
        run: |
          python3 setup.py sdist bdist_wheel
          twine upload --repository codeartifact dist/*

And then, I added this project as a dependency to another project (Let's call it ProjectB) in requirements.txt. The problem is that, when I install all dependencies in requirements.txt at ProjectB, the Post installation from ProjectA is not being executed in ProjectB, which leads the code to crash, because NLTK modules were not installed.