keeping this issue to track --user option being broke in pypy.
currently, we have our --user tests skipping for pypy
logged bug to pypy for home scheme and user scheme being broken
hello @antocuni, just noticed you in the pypa members list, maybe you could help with the pypy bug I just logged, since it looks like you're involved with the pypy project as well. see above.
This should be fixed with the release of PyPy 2.0, which will include the fix for https://bugs.pypy.org/issue1272 (https://bitbucket.org/pypy/pypy/commits/5b253d1468518921bbe24248feb26b6f54bf30ed)
closing with merge of #1692