God fucking dammit
Alright, so this is too damn long for a commit message but I don't care.
Debian apparrently adds a patch to pip that forces it to use the --user
flag. This COMPLETELY BREAKS defining target or prefix in pip.conf
As a workaround, I have to move all of my custom binaries to a different
directory and just hand .local/bin over to pip.
It's really dumb.