Reproduction for Renovate discussion 33669
In the pyproject dependencies, test_renovate dependency is specified with ~=1.0 and 1.0.0 in the uv.lock file. 1.0.1 exists in the configued index (https://test.pypi.org/simple) as seen in https://github.com/unangity/33669/actions/runs/13455855479/job/37599608672#step:4:14. However, after running the renovate bot, the lockfileMaintenance PR does not update the 1.0.0 to 1.0.1 in the uv.lock file. The logs also shows that the UV_EXTRA_INDEX_URL is not set as an environment variable in the job which is a possible cause of the error.
This behaviour is probably because the updatedDeps property, which is used to set the UV_EXTRA_INDEX_URL for lock file maintenance in https://github.com/renovatebot/renovate/blob/39.114.0/lib/modules/manager/pep621/processors/uv.ts#L283-L300 is always empty (as seen in https://github.com/renovatebot/renovate/blob/39.114.0/lib/workers/repository/update/branch/get-updated.ts#L448)
Since https://test.pypi.org/simple is set as a pypi datasource, it should be set in the UV_EXTRA_INDEX_URL in the logs. Also, since 1.0.1 of test_renovate package exists in https://test.pypi.org/simple index, lockfileMaintenance should create a pull request updating 1.0.0 in https://github.com/unangity/33669/blob/main/uv.lock#L17 to 1.0.1.