TIL

Pip is now available as a zipapp

$ curl -sLO https://bootstrap.pypa.io/pip/pip.pyz
$ chmod +x pip.pyz
$ ./pip.pyz --version
pip 22.3 from /Users/pete/projects/lincolnloop/til/pip.pyz/pip (python 3.10)

Details are in pypa/pip #11459. Note, it is still considered "experimental".