ERROR: Could not build wheels for xformers, which is required to install pyproject.toml-based projects

Beginners
8

I had the same issue. After reading this GH comment that it might be problems with versions of different tools, I tried downgrading my GCC and after that, it work successfully :tada:

How:

  1. brew install gcc@7 - install version major 7 version
  2. gcc-7 --version - check the version, it was 7.5 for me
  3. CC=gcc-7 CXX=g++-7 pip install xformer - install xformer using gcc 7.5 version
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