Tom Most

Certainly! I mean they are isomorphic: both allow running the tests against a specific Incremental package.

@glaubitz How exactly? (I would also expect them to fail without Internet access.)

Hi @di, thanks for approving the build! Some connectivity issues are making it difficult to get things working locally so it's very helpful. I'll remove the draft status when I'm...

Hi @di, this is ready again. I'd appreciate a review within a few days if you can, as I keep having to rebase through conflicts.

Hi @di, sorry for losing track of this. I've addressed your comment and merged forward.

Hi @di, thank you for the review! I've rebased the migration here again. The Dependencies build failure appears unrelated to these changes.

Thanks @woodruffw! I would also be happy to give it a go myself if that'd be helpful.

How would we make this change in a backward-compatible manner?

Another [here](https://github.com/twisted/twisted/actions/runs/12201616054/job/34040428774?pr=12383#step:10:15589): ``` Error: Traceback (most recent call last): File "/Users/runner/work/twisted/twisted/.tox/macos-withcov-alldeps/lib/python3.8/site-packages/twisted/trial/_dist/test/test_stream.py", line 198, in test_stream def test_stream(self, chunks: List[bytes]) -> None: File "/Users/runner/work/twisted/twisted/.tox/macos-withcov-alldeps/lib/python3.8/site-packages/hypothesis/core.py", line 1740, in wrapped_test raise the_error_hypothesis_found hypothesis.errors.FlakyFailure:...

Note that [PEP 784](https://peps.python.org/pep-0784/) adds a `compression.zstd` module to the stdlib in Python 3.14.