The plan is that pip will cache builds automatically in the future. Generally build requirements should be kept separate from install requirements. On May 24, 2014 12:25 PM, "Toby St Clere Smithe" <m...@tsmithe.net> wrote:
> Daniel Holth <dho...@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" <m...@tsmithe.net> > wrote: > > > >> Hi Ralf, > >> > >> Ralf Gommers <ralf.gomm...@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@python.org > >> https://mail.python.org/mailman/listinfo/distutils-sig > >> > > _______________________________________________ > > Distutils-SIG maillist - Distutils-SIG@python.org > > https://mail.python.org/mailman/listinfo/distutils-sig > > -- > Toby St Clere Smithe > http://tsmithe.net > > _______________________________________________ > Distutils-SIG maillist - Distutils-SIG@python.org > https://mail.python.org/mailman/listinfo/distutils-sig >
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