It seems id_token generation is broken with EdDSA jwks.

The create_half_hash method is called in the generate_id_token method:

However, it seems it does not support EdDSA keys:

>>> from authlib.oidc.core.util import create_half_hash
>>> assert create_half_hash("test", "RS256")
>>> assert create_half_hash("test", "EdDSA")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AssertionError

After investigation, it seems this is because authlib tries to access hashlib.shaDSA, which does not exist: