I have a dependency managed with poetry, uploaded to a private gitlab package index.
In a dependant uv project I try to add it:

$ uv add --index ${GITLAB_INDEX} livity-airtable

× No solution found when resolving dependencies:
╰─▶ Because there are no versions of livity-airtable and your project depends on livity-airtable, we can conclude that your project's requirements are unsatisfiable.

hint: livity-airtable was found on ${GITLAB_INDEX}, but not at the requested version (all versions of livity-airtable). A compatible version may be available on a

The message doesn't make it easier (package found but couldn't match version, even though I didn't request any); running with -v doesn't give any useful information.
Both projects are pure python and have exactly the same Requires-Python: >=3.11,<3.12

$ uv --version
uv 0.5.4