Installing supervisor in docker image as root downgrades setuptools

[opcoder0]

I am building a Docker image with supervisor and other Python packages. The Docker image is based on debian:bullseye with Python 3.9.2. All the installs in the image are happening as root user and the installation of supervisor via pip3 install supervisor downgrades setuptools from 57.x to 40.8. This causes other package installations to fail.

If I tried to install supervisor on my non-root environment the setuptools is not downgraded.

[mnaberez]

the installation of supervisor via pip3 install supervisor downgrades setuptools from 57.x to 40.8.

The version of the supervisor package being installed in the screenshots above, 4.2.5, has setuptools as its only dependency in setup.py. It lists only setuptools and not any particular version of setuptools.

Since supervisor does not require any particular version of setuptools and has no other dependencies which might, I don't know why setuptools is being downgraded.