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?