[Distutils] setup_requires and install_requires

[Toby St Clere Smithe]

Daniel Holth <dholth at gmail.com> writes:
> Pull requests implementing the feature are also welcome.

Well, of course. Depending on how my work goes, you may be lucky.

Cheers,

Toby


> On May 24, 2014 12:54 PM, "Toby St Clere Smithe" <mail at tsmithe.net> wrote:
>
>> Daniel Holth <dholth at gmail.com> writes:
>> > The plan is that pip will cache builds automatically in the future.
>> > Generally build  requirements should be kept separate from install
>> > requirements.
>>
>> This sounds like the best policy. I'm glad it's on the roadmap -- I
>> presume this means I do not need to open a bug report? In fact, I tried
>> to find the bug tracker (to see if such a report existed), but I must
>> confess that I entirely failed in that quest.
>>
>> Regards,
>>
>> Toby
>>
>> > On May 24, 2014 12:25 PM, "Toby St Clere Smithe" <mail at tsmithe.net>
>> wrote:
>> >
>> >> Daniel Holth <dholth at gmail.com> writes:
>> >> > Just build a wheel first. Then numpy is installed twice but only built
>> >> once.
>> >>
>> >> Sure -- but why isn't this automatic? This solution is a bit of a hack
>> >> around what seems a needless inefficiency!
>> >>
>> >>
>> >> Best,
>> >>
>> >> Toby
>> >>
>> >>
>> >> > On May 24, 2014 12:16 PM, "Toby St Clere Smithe" <mail at tsmithe.net>
>> >> wrote:
>> >> >
>> >> >> Hi Ralf,
>> >> >>
>> >> >> Ralf Gommers <ralf.gommers at gmail.com> writes:
>> >> >> > I wasn't actually.
>> >> >>
>> >> >> Well, I'm glad I could be of service, I guess. Should I report this
>> as a
>> >> >> bug?
>> >> >>
>> >> >> >> but I wonder if there's any progress
>> >> >> >> for me to be aware of. I've got an extension that I build with
>> >> >> >> distutils. It requires numpy both to build and to run, so I have
>> >> numpy
>> >> >> >> in both setup_requires and install_requires. Yet setup.py builds
>> >> numpy
>> >> >> >> twice -- once for the build stage, and then again on installation.
>> >> This
>> >> >> >> seems inefficient to me -- why not just build it once? Is this by
>> >> >> >> design?
>> >> >> >>
>> >> >> >
>> >> >> > Seems fairly inefficient, so I'd guess it's not by design.
>> >> >>
>> >> >> Indeed.
>> >> >>
>> >> >> > Note that if numpy is already installed, you may want to avoid
>> adding
>> >> the
>> >> >> > *_requires arguments in order not to silently upgrade or break the
>> >> >> > installed numpy. Something like
>> >> >> > https://github.com/scipy/scipy/pull/3566/files
>> >> >>
>> >> >> This is good advice, but what about the cases in which the build
>> machine
>> >> >> is not the installation machine? I already have a versioned
>> dependency,
>> >> >> which will on each possible machine (trivially) either be satisfied
>> or
>> >> >> not, and if it's not, then it should be.
>> >> >>
>> >> >> Cheers,
>> >> >>
>> >> >> Toby
>> >> >>
>> >> >>
>> >> >> --
>> >> >> Toby St Clere Smithe
>> >> >> http://tsmithe.net
>> >> >>
>> >> >> _______________________________________________
>> >> >> Distutils-SIG maillist  -  Distutils-SIG at python.org
>> >> >> https://mail.python.org/mailman/listinfo/distutils-sig
>> >> >>
>> >> > _______________________________________________
>> >> > Distutils-SIG maillist  -  Distutils-SIG at python.org
>> >> > https://mail.python.org/mailman/listinfo/distutils-sig
>> >>
>> >> --
>> >> Toby St Clere Smithe
>> >> http://tsmithe.net
>> >>
>> >> _______________________________________________
>> >> Distutils-SIG maillist  -  Distutils-SIG at python.org
>> >> https://mail.python.org/mailman/listinfo/distutils-sig
>> >>
>> > _______________________________________________
>> > Distutils-SIG maillist  -  Distutils-SIG at python.org
>> > https://mail.python.org/mailman/listinfo/distutils-sig
>>
>> --
>> Toby St Clere Smithe
>> http://tsmithe.net
>>
>> _______________________________________________
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>> https://mail.python.org/mailman/listinfo/distutils-sig
>>
> _______________________________________________
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-- 
Toby St Clere Smithe
http://tsmithe.net