PEP 453: venv module and pyvenv integration

[ncoghlan]

BPO	19552
Nosy	@vsajip, @ncoghlan, @larryhastings, @ned-deily, @dstufft
Dependencies	bpo-19406: PEP 453: add the ensurepip module
Files	issue19552_venv_module_api.diff: Module portion of the API, CLI changes still to come

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/ncoghlan'
closed_at = <Date 2013-11-22.14:34:27.801>
created_at = <Date 2013-11-11.10:46:02.397>
labels = ['type-feature', 'library', 'release-blocker']
title = 'PEP 453: venv module and pyvenv integration'
updated_at = <Date 2014-03-09.22:50:25.608>
user = 'https://github.com/ncoghlan'

bugs.python.org fields:

activity = <Date 2014-03-09.22:50:25.608>
actor = 'python-dev'
assignee = 'ncoghlan'
closed = True
closed_date = <Date 2013-11-22.14:34:27.801>
closer = 'python-dev'
components = ['Library (Lib)']
creation = <Date 2013-11-11.10:46:02.397>
creator = 'ncoghlan'
dependencies = ['19406']
files = ['32775']
hgrepos = []
issue_num = 19552
keywords = ['patch']
message_count = 6.0
messages = ['202612', '203759', '203760', '203769', '203780', '212997']
nosy_count = 6.0
nosy_names = ['vinay.sajip', 'ncoghlan', 'larry', 'ned.deily', 'python-dev', 'dstufft']
pr_nums = []
priority = 'release blocker'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue19552'
versions = ['Python 3.4']

[ncoghlan]

Part of the PEP-453 implementation as tracked in bpo-19347.

This issue covers the venv module and pyvenv CLI updates:

• Add a "with_pip=False" parameter to venv.EnvBuilder and venv.create

• When with_pip is a true value, invoke ensurepip.bootstrap with the root set to the just created venv and default_pip set to True

• update pyvenv to pass with_pip=True by default

• add a --without-pip option to pyvenv to pass with_pip=False instead

[ncoghlan]

Since ensurepip needs to manipulate sys.path, I ended up running the "-m ensurepip" using the venv Python in a subprocess. This both avoids side effects on the current process and gets ensurepip the right target directory settings automatically.

[dstufft]

That's similar to how virtualenv does it, so it's probably pretty reasonable.

[python-dev]

New changeset 57fbab22ab4e by Nick Coghlan in branch 'default':
Close bpo-19552: venv and pyvenv ensurepip integration
http://hg.python.org/cpython/rev/57fbab22ab4e

[ncoghlan]

Rather than reopening this (which is part of tracking the feature integration for the beta), I opened bpo-19694 to cover the stable buildbot that is objecting to the new venv test (most of the others seem happy with it)

[python-dev]

New changeset a140caad76bc by R David Murray in branch 'default':
whatsnew: venv with_pip, pyvenv --without-pip (bpo-19552)
http://hg.python.org/cpython/rev/a140caad76bc