manylinux magika wheel does not install on ubuntu 20.04 with pip

[reyammer]

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.6 LTS
Release:        20.04
Codename:       focal

$ cat /proc/cpuinfo | grep vendor_id
vendor_id       : AuthenticAMD

$ python3  --version
Python 3.8.10

$ dpkg -l | grep libc6:amd64
ii  libc6:amd64                        2.31-0ubuntu9.16                  amd64        GNU C Library: Shared libraries

$ pip install ./magika-0.6.0rc1-py3-none-manylinux_2_28_x86_64.whl
ERROR: magika-0.6.0rc1-py3-none-manylinux_2_28_x86_64.whl is not a supported wheel on this platform.

Unfortunately pip does not tell you why (see pypa/pip#10793).

What's even weirder: the wheel installs correctly (and without warnings) with uv on the same VM.

Given the metadata above, the wheel should actually be compatible.

You can get the wheel here: https://github.com/google/magika/actions/runs/11631673973

The test VM is just an ubuntu 20.04 VM on GCE.

Thoughts @ia0 @invernizzi?

[ia0]

The wheel also installs in the maturin container (see Run before script under Test wheels in #783). However the container doesn't seem to be Ubuntu 20.04 but a container with an old enough libc: quay.io/pypa/manylinux_2_28_x86_64:latest. It might be the python version: 3.11.9 in the maturin container and 3.8.10 for you.

[reyammer]

/cc @hauntsaninja maybe you know how to debug this a bit better? or maybe we are hitting a known issue with pip / manylinux?

[gaby]

@reyammer Python 3.8 is EOL since laet month. Is the plan to still support it?

Try doing a verbose install, maybe that says something

[reyammer]

It seems there is no way to get more info from pip, even with verbose (see pypa/pip#10793), BUT: using a more recent version of pip worked out!

On the old ubuntu VM I'm playing with, pip comes from the python3-pip deb package (20.0.2-5ubuntu1.11). But if I use a more recent version of pip, the wheel seems to install successfully!

Steps:

• python3 -m pip install --upgrade pip
• python3 -m pip install path/to/wheel.whl

So, everything seems working, closing this for now. We should have all we need to finally publish an -rc to pypi.

[About dropping support for 3.8: for now it's now supporting it is not creating issues, so I would leave everything as is until we run into problems?]