pip trouble

[Chris Warrick]

On 30 October 2015 at 13:14, Neal Becker <ndbecker2 at gmail.com> wrote:
> I have a custom-compiled numpy 1.10.0.  But as you see, pip wants to install
> a new numpy, even though the requirement (numpy>=1.6) was already satisfied.
> WTF?
>
> All are installed into --user.
>
> This is on fedora 22 linux.
>
> pip install --up --user matplotlib
> Collecting matplotlib
>   Using cached matplotlib-1.5.0.tar.gz
> Collecting numpy>=1.6 (from matplotlib)
>   Using cached numpy-1.10.1.tar.gz
> Requirement already up-to-date: python-dateutil in
> ./.local/lib/python2.7/site-packages (from matplotlib)
> Collecting pytz (from matplotlib)
>   Using cached pytz-2015.7-py2.py3-none-any.whl
> Collecting cycler (from matplotlib)
>   Using cached cycler-0.9.0-py2.py3-none-any.whl
> Collecting pyparsing!=2.0.4,>=1.5.6 (from matplotlib)
>   Using cached pyparsing-2.0.5-py2.py3-none-any.whl
> Collecting six>=1.5 (from python-dateutil->matplotlib)
>   Using cached six-1.10.0-py2.py3-none-any.whl
> Installing collected packages: numpy, pytz, six, cycler, pyparsing,
> matplotlib
>   Found existing installation: numpy 1.10.0
>     DEPRECATION: Uninstalling a distutils installed project (numpy) has been
> deprecated and will be removed in a future version. This is due to the fact
> that uninstalling a distutils project will only partially uninstall the
> project.
>     Uninstalling numpy-1.10.0:
>       Successfully uninstalled numpy-1.10.0
>   Running setup.py install for numpy
>
> --
> https://mail.python.org/mailman/listinfo/python-list

You used --up (aka -U, --upgrade).  That option tries to upgrade the
package you asked for *and* all dependencies. And since numpy 1.10.1
is newer than what you have installed, pip will try to install that.

-- 
Chris Warrick <https://chriswarrick.com/>
PGP: 5EAAEA16