[$] The complexity of BUSL transformation

The <a href="https://spdx.org/licenses/BUSL-1.1.html" rel="nofollow">Business
Source License</a> (BUSL) is a source-available license that "converts"
to an open-source license after a period of time. In theory, this
means that a few years after a version of a product is released under
the BUSL, it becomes open source and is fair game for Linux
distributions to package along with regular open-source projects. In
practice, the license throws a few curveballs that require special
consideration and caution, as the Fedora Project recently discussed.

https://lwn.net/Articles/984249/