freebsd/11.1 python=2.7,3.6 python_dir=/usr/local/bin freebsd/12.0 python=2.7,3.6 python_dir=/usr/local/bin osx/10.11 python=2.7 python_dir=/usr/local/bin rhel/7.6 python=2.7 rhel/8.0 python=3.6