tox
wheel

# Python 3.6
#@ markers: setuptools python_version>="3.7"
#@ add: setuptools<60 ; python_version=="3.6.*"
#@ markers: filelock python_version>="3.7"
#@ add: filelock==3.4.1 ; python_version=="3.6.*"
#@ markers: platformdirs python_version>="3.7"
#@ add: platformdirs==2.4.0 ; python_version=="3.6.*"