To avoid running a private a pypi server, we store our wheels on a file server and reference them in Pipfiles using like foo = { file = "\\\\server\\foo-0.1.20-py3-none-any.whl" } This works, but we now want to create wheels that require other local packages. To this end we have a build script that creates an install_requires list for the setup.py, looking like this: install_requires=[ ... 'foo @ file://server/foo-0.1.20-py3-none-any.whl', ...] Installing the resulting wheel with pip works fine and installs the required dependencies as expected. However, trying to list a wheel that contains transitive dependencies in a Pipfile fails: When running pipenv lock, the resulting Pipfile.lock contains all transitive dependencies, but they are all empty: "foo": {}, Subsequently, pipenv install fails: ERROR: Could not find a version that satisfies the requirement foo (from versions: none) ERROR: No matching distribution found for foo ERROR: Couldn't install package: {} Package installation failed... Am I doing something wrong? Is there any way to get this to work? Continue reading...