Consistently pass verbosity flag to VCS (git) module

[ByteB4rb1e]

What's the problem this feature will solve?

Providing the --verbose argument to pip when installing a package via git+https does not result in the verbosity being passed down to the VCS (Git) subshell commands, e.g. git submodule update.

I am on a slow and unstable internet connection. When installing packages via git+https with lots of submodules I'd like to stay informed on the progress, as to ensure that I still have a connection to the Git repository hosts referenced by the submodules and can identify when Git has detected a broken connection and is retrying.

Describe the solution you'd like

There does not seem to be an environment variable for configuring Git verbosity globally, so passing it to the VersionControl::unset_environ base class does not seem to be an option.

Instead it might be feasible to (either/or):

• Refactor the VersionControl interface to allow for explicitly passing additional subshell arguments
• Refactor the VersionControl interface specifically for passing a generic verbosity flag

In both instances the subshell command(s) affected by this feature request would need to be adapted to accept the verbosity flag.

Alternative Solutions

As described in solution

Additional context

n/a

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[notatallshaw]

Do you imagine this would be when you run pip with -v or are you proposing a new VCS verbose flag?

[ByteB4rb1e]

When running with the default -v flag, so basically a cascade, (carefully) applying the verbosity to subsystems as well.

[notatallshaw]

That seems reasonable to me, I'll mark this is awaiting a PR (pip is a volunteer project, so someone would need to choose to take up the work).

[uranusjr]

We already pass verbosity to git sometimes, but not consistently. Feel free to submit a fix.

pip/src/pip/_internal/vcs/git.py

Line 272 in e74c2d7

self, dest: str, url: HiddenText, rev_options: RevOptions, verbosity: int