---
fixes:
  - The python packages `pip`, `setuptools` and `wheel` are now all pinned on
    a per-tag basis. The pins are updated along with every OpenStack Service
    update. This is done to ensure a consistent build experience with the
    latest available packages at the time the tag is released. A deployer may
    override the pins by adding a list of required pins using the
    `pip_packages` variable in `user_variables.yml`.