hooks: add hook for fsspec

[mo-dkrz]

Add hook for fsspec to ensure that package's metadata and submodules of the drivers plugin are collected.

[mo-dkrz]

how about here?

[rokm]

Similar comments as for previous PR:

1. Update copyright year in the hook file to 2025.

2. Update the news fragment as the hook is now only collecting submodules:

Add hook for ``fsspec`` to collect the package's submodules and ensure the protocol plugins are working.

3. Update the test to compare working fsspec protocols in unfrozen python vs. frozen test application:

@importorskip('fsspec')
def test_fsspec_protocols(pyi_builder, tmp_path):
    # Get the list of working protocols in unfrozen python
    @isolated.decorate
    def _get_working_fsspec_protocols():
        import fsspec

        working_protocols = []
        for protocol in fsspec.available_protocols():
            try:
                obj = fsspec.get_filesystem_class(protocol)
                working_protocols.append(protocol)
            except ImportError:
                pass

        return sorted(working_protocols)

    protocols_unfrozen = _get_working_fsspec_protocols()
    print(f"Unfrozen protocols: {protocols_unfrozen}")

    # Obtain list of working protocols in frozen application.
    output_file = tmp_path / "output.txt"

    pyi_builder.test_source("""
        import sys
        import fsspec

        working_protocols = []
        for protocol in fsspec.available_protocols():
            try:
                obj = fsspec.get_filesystem_class(protocol)
                working_protocols.append(protocol)
            except ImportError:
                pass

        with open(sys.argv[1], 'w') as fp:
            for protocol in working_protocols:
                print(f"{protocol}", file=fp)
    """, app_args=[str(output_file)])

    with open(output_file, "r") as fp:
        protocols_frozen = sorted(line.strip() for line in fp)
    print(f"Frozen protocols: {protocols_frozen}")

    assert protocols_frozen == protocols_unfrozen

[rokm]

The last part requires from PyInstaller import isolated again, which might cause conflict with the previous PR.

[mo-dkrz]

done

[bwoodsend]

I keep meaning to add a note to the readme telling people to put their new test at a random point in the test file instead of at the bottom so as to avoid merge conflicts with every other pull request that adds a test...

[mo-dkrz]

@bwoodsend after merging the hook-zarr one commit will be left to resolve the conflicts and to be ready to merge

[mo-dkrz]

@rokm @bwoodsend if you don't mind could i ask, when the newest release will be done? Because I'm going to use the newest version in our stacks for support intake. Thanks

[rokm]

@rokm @bwoodsend if you don't mind could i ask, when the newest release will be done? Because I'm going to use the newest version in our stacks for support intake. Thanks

We can run the release workflow right after we merge all these PRs.

[mo-dkrz]

thanks and done