git-deps fails to work with Flask >= 2.2 (safe_join has been removed in Flask)

[zorun]

I installed git-deps via pip, and it fails to start in server mode:

$ git deps -s
Cannot find flask module which is required for webserver mode.

After some debugging, it turns out that the safe_join import fails because that function has just been removed from Flask: pallets/flask#4516

Since git-deps does not pin constrain the dependency on flask, it pulls the latest available version.

The workaround I'm using for now is:

$ pip install 'flask<2.1'

[imwcc]

I meet a same issue

[aspiers]

Thanks a lot for the report and the fix!

[titarch]

I ran into this issue but downgrading flask was not enough. I also had to downgrade Werkzeug:
pip install Werkzeug==2.2.2