Ronald Oussoren <ronaldousso...@mac.com> added the comment:
The problem with moving from Catalina to Big Sur is a known issue, AFAIK there's an open issue for this. The problem is that Big Sur moved system libraries into a big blob (which Apple calls the shared library cache). Ctypes uses an API that's new in macOS 11 to check if a library is in that cache, but only when compiled with the the macOS 11 SDK or later as the API is not available in earlier SDKs. Moving from Big Sur to earlier version should work fine, but only if you set the deployment target correctly during the build. This is how the "universal2" installers on python.org are build. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue44689> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
