JonathanLoungani

I am looking further into this issue. Currently, [this StackOverflow post ](https://stackoverflow.com/questions/17980759/xcode-select-active-developer-directory-error/19529693#19529693) suggests that "This problem happens when `xcode-select` developer directory was pointing to `/Library/Developer/CommandLineTools` when a full regular Xcode...

Continuing to dig, I found the following [page on PyInstaller](https://github.com/pyinstaller/pyinstaller/wiki/Recipe-OSX-Code-Signing#pyinstaller-fix-implementation) which explains an issue with PyInstaller that produces the same error message. > PyInstaller breaks OSX code signing because it...

Current guess based on discussion during the sprint: Something in the format of the template being produced by recent versions of Xcode are incompatible with the code signing tools from...

I was unable to build the stub project from the Mac OS app template on my machine, as described in this issue: https://github.com/beeware/Python-Apple-support/issues/220

This issue also occurs when using Python 3.9 ``` Undefined symbols for architecture x86_64: "_mkfifoat", referenced from: _os_mkfifo in libPython3.9.a(posixmodule.o) "_mknodat", referenced from: _os_mknod in libPython3.9.a(posixmodule.o) ld: symbol(s) not found...