René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Update to XZ 5.8.1 on Windows and macOS","articleBody":"The current version of XZ used by Windows and macOS (5.2.x) [is no longer supported](https://tukaani.org/xz/#_development). We should update to 5.8.1 so that we are on a supported branch.\n\nThe macOS installer uses 5.2.3 https://github.com/python/cpython/blob/a17c57eee5b5cc81390750d07e4800b19c0c3084/Mac/BuildScript/build-installer.py#L314-L324\n\nThe Windows build uses 5.2.5 https://github.com/python/cpython/blob/a17c57eee5b5cc81390750d07e4800b19c0c3084/PCbuild/get_externals.bat#L62\n\nI have a draft PR to cpython-source-deps to import 5.8.1 https://github.com/python/cpython-source-deps/pull/44, but given the large version change the MSVC build definition will likely need some updating too (see e.g. https://github.com/python/cpython/pull/140818).\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-140858\n* gh-141022\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/emmatyping","@type":"Person","name":"emmatyping"},"datePublished":"2025-10-31T16:30:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/140849/cpython/issues/140849"}