I've setup the snapcraft-dev lxc environment by following the instruction on the Hacking readme file on the Snapcraft Github repository. When running the static test suite via pytest, the test_get_extensions_data_dir fails with the following error: def test_get_extensions_data_dir(): > assert (get_extensions_data_dir() / "desktop").is_dir() E AssertionError: assert False E + where False = <bound method Path.is_dir of PosixPath('/home/ubuntu/.venv/snapcraft/share/snapcraft/extensions/desktop')>() E + where <bound method Path.is_dir of PosixPath('/home/ubuntu/.venv/snapcraft/share/snapcraft/extensions/desktop')> = (PosixPath('/home/ubuntu/.venv/snapcraft/share/snapcraft/extensions') / 'desktop').is_dir E + where PosixPath('/home/ubuntu/.venv/snapcraft/share/snapcraft/extensions') = get_extensions_data_dir() tests/unit/extensions/test_extensions.py:234: AssertionError The error is resolved by running pip install . within the snapcraft directory. After some investigation I saw that the ./tools/environment-setup.sh, calls the ./tool/environment-setup.local.sh script, which calls pip install --editable "${SNAPCRAFT_DIR}" (https://github.com/snapcore/snapcraft/blob/main/tools/environment-setup-local.sh#L41-L42). Removing the --editable flag fixes the issue in this case, but i'm not sure whether then it breaks the functionality that was initially thought for the local script.