Got the error:

BUILD FAILED (OS X 12.0.1 using python-build 2.2.3-1-g423de9ae)

Found some references on internet and in this git but none worked for me. I installed everything following the instructions on https://github.com/pyenv/pyenv#homebrew-in-macos

Too many issues will kill our team's development velocity, drastically.
Make sure you have checked all steps below.

Prerequisite

• Make sure your problem is not listed in the common build problems.
• Make sure no duplicated issue has already been reported in the pyenv issues. You should look for closed issues, too.
• Make sure you are not asking us to help solving your specific issue.
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  • Please refer to the package documentation for the installation issues, etc.
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Description

• Platform information (e.g. Ubuntu Linux 16.04): macOS Monterey version 12.0.1
• OS architecture (e.g. amd64): Intel Core i7 64bits
• pyenv version: pyenv 2.2.3-1-g423de9ae
• Python version: Trying to install 3.8.6
• C Compiler information (e.g. gcc 7.3):

gcc -v
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.3 (clang-1103.0.32.29)
Target: x86_64-apple-darwin21.1.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

• Please attach the debug trace of the failing command as a gist:
  • Run env PYENV_DEBUG=1 <faulty command> 2>&1 | tee trace.log and attach trace.log. E.g. if you have a problem with installing Python, run env PYENV_DEBUG=1 pyenv install -v <version> 2>&1 | tee trace.log (note the -v option to pyenv install).

gosantos@MacBook-Pro ~ % env PYENV_DEBUG=1 pyenv install -v 3.8.6 2>&1 | tee trace.log

Produced the file:
trace.log

Gist
https://gist.github.com/gsantosoliver/f97422450d2036d63e2ae6ba15f23c8f