[issue42691] macOS 11.1 + Homebrew 2.6.2 + Python 3.9.1 = "IDLE" crash

[FX Coudert]

FX Coudert <fxcoudert at gmail.com> added the comment:

After checking, I can see the code in cpython's setup.py is still there. detect_tkinter_darwin will prefer the system's version over anything we can specific in our cflags or ldflags. This seems contrary to the advice above not to use macOS system Tcl/Tk.

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<https://bugs.python.org/issue42691>
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