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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"iOS multi-arch simulator framework duplicates libPython dylib","articleBody":"### Bug description:\n\nThe XCframework utility script that is used to process the dylibs in the Python standard library does two things:\n\n1. Copies the standard library from the XCframework location in the Xcode project into the app\n2. Processes all libraries in the `lib/python3.x` folder, and turns them into frameworks.\n\nIf you build a thin simulator framework (i.e., a single architecture), it explicitly excludes the libPython dylib from step (1). However, this isn't done for a multi-architecture simulator framework. This historically wasn't necessary, because the libPython is platform specific, and was contained in the `lib-\u003carch\u003e` folder. \n\nHowever, as a result of #141692, a multi-architecture framework now includes a lib folder that has a libpython dylib. This means step (1) now copies. By introducing a symlink in the lib folder, the util script now has two problems:\n\n1. There's content in the `lib` folder that will be rejected by the App Store validation process\n2. The util script breaks in such a way that it doesn't find the `python3.X` folder that needs to be processed in step (2).\n\nThis problem can be seen by building a *full* framework (i.e., `python Apple ci --slow-ci`) - a handful of tests will fail because `.origin` files for modules in the standard library aren't written. It doesn't affect the \"--fast-ci\" path (which is what GitHub Actions runs), as that only generates a \"thin\" framework.\n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\nOther\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-146499\n* gh-146502\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/freakboy3742","@type":"Person","name":"freakboy3742"},"datePublished":"2026-03-26T22:50:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/146498/cpython/issues/146498"}