[Python-Dev] PEP 453 (pip bootstrapping) ready for pronouncement? (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Thu Sep 26 23:20:49 CEST 2013

On 27 Sep 2013 00:12, "Antoine Pitrou" <solipsis at pitrou.net> wrote:

Le Thu, 26 Sep 2013 14:54:49 +1000, Nick Coghlan <ncoghlan at gmail.com> a écrit : > On 26 September 2013 14:30, Nick Coghlan <ncoghlan at gmail.com> wrote: > > That said, there are changes that I think are definitely worth > > making due to the concerns you raise: > > > > - the module name should be "ensurepip" in all versions > > - the PEP should explicitly state that the "don't remove ensurepip > > and it's wheel files" caveat for redistributors applies only in 3.4+ > > (where removing it will break pyvenv) > > Donald pointed out it makes more sense to continue with the idea of a > properly documented public "ensurepip" module in 3.4+, and have the > "ensurepip" version as an implementation detail of the 2.7 and 3.3 > installers that is included in the stdlib primarily so it can be > covered by the existing buildbot fleet. Hmm, but what is the point of "ensurepip" exactly? Are people supposed to type "python -m ensurepip"?

With all due respect, Barry's argument looks rather paranoid to me. I would suggest a clear choice: - either having "ensurepip" in 2.7 is useful and we endorse it as a public module (not something hidden somewhere) - which I personally think is reasonable - or it's not useful and we don't introduce it at all A middleground doesn't make sense here, except in a broken "design by committee" sense.

The only reason to have _ensurepip in the older versions is to make the "install pip" option in the installers work. By contrast, in 3.4+ it will be integrated into pyvenv and a fully supported API.

The two levels make sense to me, especially since pyvenv in 3.3 won't be updated to invoke it automatically. 2.7 and 3.3 users will still need to install and use virtualenv to get pip automatically installed in virtual environments.

Cheers, Nick.

Regards Antoine.

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