Change protocol check to fallback for known implementations

[hadim]

The code below:

from upath import UPath
root_dir = UPath("simplecache::s3://my-bucket")

triggers this one-time warning:

.pixi/envs/default/lib/python3.13/site-packages/upath/_flavour.py:431: UserWarning: Could not find default for known protocol 'simplecache'. Creating a default flavour for it. Please report this to the universal_pathlib issue tracker.
  return WrappedFileSystemFlavour.from_protocol(protocol).get_kwargs_from_url(url)

which I think is a false positive due to a typo.

But I am not sure and maybe I misunderstand the logic here so let me know!

Using the latest version of upath.

[ap--]

Hi @hadim

Thanks for the PR! The check is intended:

raise a warning for known fsspec protocols that currently don't have a flavour represented in universal-pathlib

I am working to get full simplecache support for the next release #445 which once finalized will include removal of the warning for chained simplecache paths. Should land in a v0.3.4 release in the near future.

[hadim]

Ok sorry for the noise then! Thanks.