PyEnv BUILD FAILED installing Python on MacOS

Question

While trying to install Python 3.6.6 (for Airflow) using PyEnv on MacOS, I am encountering build failure

Answer 1

This worked for me:

1. remove CommandLineTools folder under /Library/Developer
2. run in terminal: xcode-select --install
3. sudo mv /usr/local/include /usr/local/include_old