Include exit code for build failures

[konstin]

uv pip install mysqlclient==2.1.1 on python 3.12 on windows, where the are no binary wheels:

Part of #2052.

[charliermarsh]

I'm finding it hard to tell which exit code belongs to which process, since exit code: 2 appears twice and exit code: 1 appears once. How does pip lay it out in this case?

[konstin]

Sharing linux now, windows after a reboot.

The linux comparison is asymmetric since we never call egg_info:

pip

uv

[konstin]

Windows, my IDE terminal

pip

It's cut off because that's my screen height.

uv

Default size windows terminal (powershell)

pip

uv

Full height windows terminal (powershell)

This time a side-by-side view

[konstin]

I'm thinking about adding a message at the bottom after the stdout/stderr so it's immediately clear what failed even if setuptools and compilers spill so much output that it scrolled multiple pages.