We love pip and Fabric for Django deployment. You can see our boilerplate fabfile.py here. Pip, however, isn’t safe to run in an automated fashion. If you attempt to switch branches or repos for one of your editable requirements, you’ll be presented with this input:
What to do? (s)witch, (i)gnore, (w)ipe, (b)ackup
At this time, there is an open bug to solve this problem, but thanks to the trusty *nix toolkit, we have an easy workaround. Enter
yes. From its manpage:
NAME yes – output a string repeatedly until killed
SYNOPSIS yes [STRING]… yes OPTION
Repeatedly output a line with all specified STRING, or `y’.
I have the most success with the “wipe” option for pip, so now we can simply run:
yes w | pip install -r requirements.pip
wto any prompt that pip displays, making it much more robust to use in an automated environment.