[issue19550] PEP 453: Windows installer integration

[Nick Coghlan]

Nick Coghlan added the comment:

I think "Off by default" is a reasonable solution for the beta (and
even 3.4 final), but a separate issue explaining *why* it's off by
default would be good. I can then ping the pip folks to ask for
suggestions - if they come up with something workable, we may be able
to have it turned on by default in 3.4 final.

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[issue19550] PEP 453: Windows installer integration

[Ned Deily]

Ned Deily added the comment:

If it is acceptable for the "Remove" option to be somewhat unpredictable in the 
case where pip or setuptools was already installed and not by the installer, 
would "python -m pip uninstall --yes pip setuptools" work?  If not, should a 
new issue be opened to find a solution?

--
nosy: +ned.deily

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[issue19550] PEP 453: Windows installer integration

[Nick Coghlan]

Nick Coghlan added the comment:

That sounds reasonable to me - thanks!

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[issue19550] PEP 453: Windows installer integration

[Martin v . Löwis]

Martin v. Löwis added the comment:

I have now committed the changes to the installer. A demo installer can be 
found at

http://prof.beuth-hochschule.de/fileadmin/user/mvon_loewis/python-3.4.16027.msi

I'm skeptical about the lack of proper deinstallation: per convention, 
uninstallation of software ought to be "clean" on windows, i.e. return the 
system to the state it had before the installation.

Uninstallation currently isn't clean when pip installation is selected. I know 
this is what the PEP says, but I'm still unhappy, and I know that users will 
dislike it. So as a compromise, I made the installation of pip non-default, 
meaning that users have to opt into installing something that doesn't properly 
uninstall.

--
resolution:  -> fixed
status: open -> closed

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[issue19550] PEP 453: Windows installer integration

[Roundup Robot]

Roundup Robot added the comment:

New changeset e0c4a5b2b739 by Martin v. Löwis in branch 'default':
Issue #19550: Implement Windows installer changes of PEP 453 (ensurepip).
http://hg.python.org/cpython/rev/e0c4a5b2b739

--
nosy: +python-dev

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[issue19550] PEP 453: Windows installer integration

[Nick Coghlan]

Nick Coghlan added the comment:

After a CPython installation with the option checked, the installed pip
should be at least as recent as the bundled one:
http://www.python.org/dev/peps/pep-0453/#invocation-from-the-cpython-installers

You're right the prompt may be better as something like "Install/upgrade
pip?", since a previously installed pip may be upgraded when installing a
CPython maintenance release.

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[issue19550] PEP 453: Windows installer integration

[Martin v . Löwis]

Martin v. Löwis added the comment:

I'm currently blocked on a discrepancy of this request and PEP 453.

You are asking me to run "ensurepip --upgrade", whereas the PEP asks for an 
option to install the bundled pip (i.e. a mere ensurepip). Which of these 
should be done?

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[issue19550] PEP 453: Windows installer integration

[Martin v . Löwis]

Martin v. Löwis added the comment:

I missed the original message. I'll try to come up with a patch.

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[issue19550] PEP 453: Windows installer integration

[Martin v . Löwis]

Martin v. Löwis added the comment:

IIUC, the current implementation strategy is to check the wheels into source 
control. If so, what's to be done in the installer (except for making sure that 
the wheels get bundled and installed into the msi, which it should do by 
default?)

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[issue19550] PEP 453: Windows installer integration

[Nick Coghlan]

Changes by Nick Coghlan :


--
stage:  -> needs patch
type:  -> enhancement

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[issue19550] PEP 453: Windows installer integration

[Nick Coghlan]

New submission from Nick Coghlan:

Part of the PEP 453 implementation as tracked in issue 19347.

This issue covers the Windows installer updates:

* new option to choose whether or not to invoke "python -m ensurepip --upgrade" 
on the just installed Python

* also add the result of calling 'sysconfig.get_path("scripts")' to PATH when 
PATH modification is enabled in the installer

--
assignee: loewis
components: Windows
messages: 202610
nosy: larry, loewis, ncoghlan
priority: release blocker
severity: normal
status: open
title: PEP 453: Windows installer integration
versions: Python 3.4

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[issue19550] PEP 453: Windows installer integration

[Nick Coghlan]

Changes by Nick Coghlan :


--
dependencies: +PEP 453: add the ensurepip module

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