It appears wheel support is disabled.
Make sure that you have setuptools
version 0.8 or newer installed, and that the use-wheel
option is not set to false
in $HOME/.pip/pip.conf
.
Upgrading setuptools
is easy enough if pip
is already working:
pip install --upgrade setuptools
but note that older virtualenv
versions can depend on older setuptools
versions; you'll need to make sure that virtualenv
is also up to date.