DistutilsOptionError: must supply either home or prefix/exec-prefix — not both

Question

I\'ve been usually installed python packages through pip.

For Google App Engine, I need to install packages to another target directory.

I\'ve tried:

Answer 1

I hit errors with the other recommendations around --install-option="--prefix=lib". The only thing I found that worked is using PYTHONUSERBASE as described here.

export PYTHONUSERBASE=lib
pip install -I flask-restful --user

this is not exactly the same as --target, but it does the trick for me in any case.