Installation anomaly version 2.5.10 (venv)

I relaunched several times and even redone the git clone + config + make & make install and still the same crash:

INFO: This is taking longer than usual. You might need to provide the dependency resolver with stricter constraints to reduce runtime. If you want to abort this run, you can press Ctrl + C to do so. To improve how pip performs, tell us what happened here:
Using cached (74 kB)
Downloading (72 kB)
|████████████████████████████████| 72 kB 372 kB/s

I don’t see what is causing this anomaly

thank you in advance