Problem when using pip to upgrade flexget

[Silmano]

I have the stable portage versions of dev-python/setuptools and dev-python/pip and I have manually installed flexget (I'm not using the portage one).

When there's a new version and I want to update, running 'pip install --upgrade flexget' installs the needed files, but also latest setuptools version. This seems to update the python-exec binary, so if I try to run again pip install, it doesn't work:

[Hu]

Generally, running multiple package managers on the same system is a recipe for trouble if they do not communicate with one another. The pip authors like to think of themselves as running a package manager. If running pip breaks something managed by Portage, that sounds like a bug in pip. Is there a good reason why you are not using Portage to install this package?

[Silmano]