find_package_names test fails inside devcontainer

It is kind of weird to create an issue about my own contribution, but I am really stuck trying to resolve it 🙁

This is what happens:

______________________________ test_find_package_names _______________________________

    def test_find_package_names():
>       packages = find_package_names()

/workspaces/repo-pydeps@aleks-ivanov/tests/test_package_names.py:7: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    def find_package_names():
        site_packages = sysconfig.get_paths()['purelib']
        # initialize with well-known packages that don't seem to have a top_level.txt
        res = {
            'yaml': 'PyYAML',
            'Crypto': 'pycrypto',
        }
>       for pth in os.listdir(site_packages):
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/lib/python3.9/site-packages'

/workspaces/repo-pydeps@aleks-ivanov/pydeps/package_names.py:14: FileNotFoundError
================================== warnings summary ==================================
pydeps/mf27.py:7
  /workspaces/repo-pydeps@aleks-ivanov/pydeps/mf27.py:7: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
    import imp

-- Docs: https://docs.pytest.org/en/stable/warnings.html
============================== short test summary info ===============================
FAILED tests/test_package_names.py::test_find_package_names - FileNotFoundError: [E...
====================== 1 failed, 39 passed, 1 warning in 19.13s ======================

Any ideas why this happens ?

[thebjorn]

ok, so pytest has landed in /home/vscode/.local/lib/python3.9/site-packages/… Fixed in latest checkin.

[aleks-ivanov]

Aside from that we are currently working on a more robust version of the devcontainer and will contribute it soon.