SyntaxError on Python < 3.12: backslash in f-string expression (frictionless/gpkg.py)

[jinskeep-morpc]

Problem

morpc/frictionless/gpkg.py:264 puts a backslash inside an f-string expression:

name=f"{baseName}-{re.sub(r'\W+', '-', layerName).lower()}",

Python 3.12 allows this (PEP 701). Python 3.10 and 3.11 reject it, so any import of morpc.frictionless fails with:

File ".../morpc/frictionless/gpkg.py", line 264
    name=f"{baseName}-{re.sub(r'\W+', '-', layerName).lower()}",
SyntaxError: f-string expression part cannot include a backslash

pyproject.toml says requires-python = ">=3.10", so this breaks versions the package claims to support.

Impact

This breaks downstream packages too. In morpc-census CI, the Python 3.11 job fails 164 of 337 tests because of this import error, while the 3.12 job passes (failing run).

Suggested fix

Move the re.sub call out of the f-string:

safeLayerName = re.sub(r'\W+', '-', layerName).lower()
...
name=f"{baseName}-{safeLayerName}",

A search of morpc/ turned up no other backslash inside an f-string expression. Adding Python 3.10/3.11 to the CI test matrix would catch this kind of problem next time.