Revert to zlib on macOS < 10.15 #8772
Merged
Add this suggestion to a batch that can be applied as a single commit. This suggestion is invalid because no changes were made to the code. Suggestions cannot be applied while the pull request is closed. Suggestions cannot be applied while viewing a subset of changes. Only one suggestion per line can be applied in a batch. Add this suggestion to a batch that can be applied as a single commit. Applying suggestions on deleted lines is not supported. You must change the existing code in this line in order to create a valid suggestion. Outdated suggestions cannot be applied. This suggestion has been applied or marked resolved. Suggestions cannot be applied from pending reviews. Suggestions cannot be applied on multi-line comments. Suggestions cannot be applied while the pull request is queued to merge. Suggestion cannot be applied right now. Please check back later.
#8500 switched to zlib-ng in our wheels. However, #8750 has reported that wheels now segfault on macOS 10.13 and 10.14.
zlib-ng/zlib-ng#1877 was created to investigate this, and there is now a proposed fix in zlib-ng/zlib-ng#1878.
However, in case it is not merged and released before Pillow 11.2.0, this PR temporarily reverts to using zlib on macOS < 10.15.