[Distutils] [Numpy-discussion] Proposal: stop supporting 'setup.py install'; start requiring 'pip install .' instead

[Donald Stufft]

I’m not at my computer, but does ``pip install —no-clean —build <insert build dir>`` make this work? 

On November 5, 2015 at 5:25:16 PM, Ralf Gommers (ralf.gommers at gmail.com) wrote:
> On Tue, Nov 3, 2015 at 6:10 PM, Chris Barker - NOAA Federal <
> chris.barker at noaa.gov> wrote:
>  
> > >> I'm not talking about in place installs, I'm talking about e.g.
> > building a
> > >> wheel and then tweaking one file and rebuilding -- traditionally build
> > >> systems go to some effort to keep track of intermediate artifacts and
> > reuse
> > >> them across builds when possible, but if you always copy the source tree
> > >> into a temporary directory before building then there's not much the
> > build
> > >> system can do.
> >
> > This strikes me as an optimization -- is it an important one?
> >
>  
> Yes, I think it is. At least if we want to move people towards `pip install
> .` instead of `python setup.py`.
>  
>  
> > If I'm doing a lot of tweaking and re-running, I'm usually in develop mode.
> >
>  
> Everyone has a slightly different workflow. What if you install into a
> bunch of different venvs between tweaks? The non-caching for a package like
> scipy pushes rebuild time from <30 sec to ~10 min.
>  
>  
> > I can see that when you build a wheel, you may build it, test it,
> > discover an wheel-specific error, and then need to repeat the cycle --
> > but is that a major use-case?
> >
> > That being said, I have been pretty frustrated debugging conda-build
> > scripts -- there is a lot of overhead setting up the build environment
> > each time you do a build...
> >
> > But with wheel building there is much less overhead, and far fewer
> > complications requiring the edit-build cycle.
> >
> > And couldn't make-style this-has-already-been-done checking happen
> > with a copy anyway?
> >
>  
> The whole point of the copy is that it's a clean environment. Pip currently
> creates tempdirs and removes them when it's done building. So no.
>  
> Ralf
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>  

-----------------
Donald Stufft
PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA