I have some projects that have setuptools-scm as a depdendency, but without [tool.setuptools_scm] in the pyproject.toml. I'm using dynamic versioning from [tool.setuptools.dynamic] for versioning (not scm). With the 9.1.1 build these now fail with:

LookupError: setuptools-scm was unable to detect version for C:\...

Was this a recent requirement change? I don't see how to disable dynamic versioning in setuptools-scm (only enable it).