[Ironpython-users] Supporting ensurepip early in the development timeline?

Vernon D. Cole vernondcole at gmail.com
Tue May 6 10:37:57 CEST 2014

The following post appeared in Jython-dev this morning.

I think that this might be a really good idea for IronPython, too,
especially now that there is a patch for setuptools so that it will not
choke on Iron.

Should this be included as a work item in our tracker?
Vernon Cole
v v v v v v v

Date: Mon, 5 May 2014 12:24:41 -0600
From: Jim Baker <jim.baker at python.org>
Subject: [Jython-dev] Supporting ensurepip in beta 4
To: Jython Developers <jython-dev at lists.sourceforge.net>
        <CAL9RhrX8HNzFvRX4YNC6za7mc8tboWJC7+b16w2YEHVwvG8F9w at mail.gmail.com>
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I just had a nice conversation on #pypa-dev re ensurepip, which is part of
Python 3.4 and will also be bundled in PyPy 2.3, which supports both 2.7
and 3.4 versions of Python. I recommend that Jython 2.7 do the same, given
that like PyPy we are under active development, unlike CPython 2.7.

We should be able to do this in time for beta 4.

ensurepip (https://docs.python.org/3/library/ensurepip.html) provides
support for having a bundled version of pip, which is then used to install
the current version of pip in a matter that's transparent to the user.
Jython simply needs to bundle the required pip and setuptools wheels and
the ensurepip package in stdlib.

This will mean that our users will have pip immediately available to them
upon installing Jython, with no extra steps required. PyPy has done the
hard work to provide a 2.7-compatible version. More rationale here:

This timeline depends on a pull request I made against pip's vendor lib
dependency html5lib-python getting made, but I don't expect us to see any
blockers there.

- Jim
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