Without the change certificate installation fails as:
$ moz-phab install-certificate
...
Upgrading to version 1.0.0
...-python3.9-setuptools-61.2.0/lib/python3.9/site-packages/setuptools/command/install.py:34:
SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
warnings.warn(
...-python3-3.9.12/bin/python3.9: No module named pip
CommandError: command '...-python3-3.9.12/bin/python3.9' failed to complete successfully
Run moz-phab again with '--trace' to show debugging output
Closes: https://github.com/NixOS/nixpkgs/issues/174692
