This restores the Python wheel CI runs from the old upb repo with only minor
changes. I had to update a path in one of the `py_wheel` rules and also make a
slight tweak to ensure that the `descriptor.upb_minitable.{h,c}` files make it
into the source wheels. The change in text_format_test.py is not strictly
necessary but is a small simplification I made while I was trying to debug an
issue with CRLF newlines.
I had to update test_util.py to use `importlib` to access the golden files from
the installed `protobuftests` package. I suspect the previous incarnation of
thse test runs was somehow reading the goldens from the repo checkout, but I
think the intention is to read them from `protobuftests` instead. This was a
bit tricky to get working because Python versions before 3.9 do not support
`importlib.resources.files()`. I set up the code to fall back on
`importlib.resources.open_binary()` in that case, but that function does not
support subdirectories, so this required putting an `__init__.py` file inside
the `testdata` directory to make sure it is treated as a Python package.
PiperOrigin-RevId: 567366695
I am getting ready to move almost everything under the upb/ directory up one
level to integrate upb better into its new location in the protobuf repo. This
change makes a few tweaks to prepare for that:
- Delete upb's LICENSE and CONTRIBUTING.md files since we already have similar
files at the top level.
- Rename `//python:python_version` so that it won't conflict later with
`//upb/python:python_version`.
- Move the contents of python/BUILD.bazel out to a Bazel macro to facilitate
merging that BUILD.bazel file with upb/python/BUILD.
PiperOrigin-RevId: 567119840
Prior to this CL, upb MiniDescriptors only allowed per-message control over UTF-8. This CL adds a new field-level modifier to upb MiniDescriptors that can flip a field to the opposite of the message default, like we already have for packed, allowing per-field control over UTF-8 validation.
PiperOrigin-RevId: 566638331