I created multiple packages according to the PEP420 implicit namespace packaging method. Two of those distribution packages are dende-github-api and dende-gitlab-api. Each of those distributions contains one module which I want to be accessible unter the dende.api namespace. A minimal working example can be found here: https://github.com/dende/example-monorepositry This is the folder structure of the Repository containing both distributions: example-monorepository ├── dende-github-api │ ├── dende │ │ └── api │ │ ├── github.py │ │ └── __init__.py │ └── setup.py ├── dende-gitlab-api │ ├── dende │ │ └── api │ │ ├── gitlab.py │ │ └── __init__.py │ └── setup.py ├── requirements.dev.txt └── requirements.txt And the setup.py files look like this (only showing for dende-github-api): from setuptools import setup setup( name='dende-github-api', packages=['dende.api'], install_requires=[ 'PyGithub' ] ) I can install both distributions and use them just fine: $ pip install ./dende-github-api $ pip install ./dende-gitlab-api $ python -m dende.api.github Hi from dende-github-api from /home/c/git/example-monorepositry/venv/lib/python3.8/site-packages/dende/api/github.py $ python -m dende.api.gitlab Hi from dende-gitlab-api from /home/c/git/example-monorepositry/venv/lib/python3.8/site-packages/dende/api/gitlab.py When I install both distributions in editable mode, only one of the installations work: $ pip install -e ./dende-github-api $ pip install -e ./dende-gitlab-api python -m dende.api.gitlab Hi from dende-gitlab-api from /home/c/git/example-monorepositry/venv/lib/python3.8/site-packages/dende/api/gitlab.py python -m dende.api.github /home/c/git/example-monorepositry/venv/bin/python: No module named dende.api.github Somehow the second installation seems to shadow the installation of the older distribution in the overlapping namespace. Is it possible to install overlapping packages like these in editable mode? Continue reading...