Red Hat Bugzilla – Bug 1279957
python rpm requires python-pip
Last modified: 2016-12-20 10:36:39 EST
Description of problem:
python rpm is dependent on python-pip rpm, while it should be the other way around, as it was in Fedora 20 packages and the way it is in RHEL7.
This causes very bad behavior if removing python-pip, since that causes removal of python, hence dnf/yum and leaves the system in a very messy state.
Version-Release number of selected component (if applicable):
How reproducible: Always
Steps to Reproduce:
1. dnf remove -y python-pip
system without dnf, python
system with the python-pip only package removed.
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
This is an upstream change. Since Python 2.7.9, Python comes with pip: https://docs.python.org/2/library/ensurepip.html
Perhaps we should add it as a weak dependency.
*** Bug 1274820 has been marked as a duplicate of this bug. ***
@Petr: perhaps the separate rpms are should be reconsidered and python.rpm should include pip as they do it in pip ?
Well, actualy it's a bit more complicated than just Python bundling Pip.
Pip has a faster release schedule, so Python's bundled copy will be outdated a few months after release. The bundled copy is used by the "ensurepip" module to ensure there's *some* version of Pip in newly created virtual evironments (by default). Users are then expected to upgrade that Pip and keep it up to date -- using Pip itself.
But, Fedora controls the system Pip, and keeps it up to date. Using "ensurepip" in Fedora will not install the (possibly old) Pip bundled with the original Python release, but the one from RPMs. We don't want to rebuild all of Python whenever Pip makes a new release.
All this is in line with upstream recommendations: https://www.python.org/dev/peps/pep-0453/#id49
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