Incomplete scenario that migrates most things into placeholder collection, hopefully leaving a usable Ansible version, keeps certain things in Core.
This is *NOT *for final/production use.
ansible-minimal is built, at least daily, to https://github.com/ansible-collection-migration/ansible-minimal and is installable by doing:
pip install git+https://github.com/ansible-collection-migration/ansible-minimal.git