Wrong fingerprint in Gitlab format

[Agalin]

Ruff version: 0.0.253

Gitlab Code Quality formatter sets fingerprint to a code of the issue, e.g. F401.

But this field should be a unique value identifying a single violation, not its type. As a consequence, multiple violations of the same type are not visible (only the last one is shown).

It makes the feature unusable, for a project with currently 120 violations Gitlab only shows 7 (as there are 7 unique types of violations).

[Agalin]

Just checked and it's not possible to work around this using external tools - report doesn't provide column position which means that it's not possible to distinguish multiple issues with the same description in the same line.

[charliermarsh]

Makes sense, thanks for filing!