They seem to force using python -m pip on Windows since they don't ship pip.exe[4]? This is very interesting.
From their doc[5] since the README.md's super-bare:
> These Python distributions contain a fully-usable, full-featured Python installation: most extension modules from the Python standard library are present and their library dependencies are either distributed with the distribution or are statically linked.
> The Python distributions are built in a manner to minimize run-time dependencies. This includes limiting the CPU instructions that can be used and limiting the set of shared libraries required at run-time. The goal is for the produced distribution to work on any system for the targeted architecture.
[1]: https://github.com/astral-sh/ruff
[2]: Significantly faster than regular pip: https://github.com/astral-sh/uv
[4]: https://gregoryszorc.com/docs/python-build-standalone/main/q...
[5]: https://gregoryszorc.com/docs/python-build-standalone/main/