WRT the return value, I don't really care. But I am strongly in favor of removing the build_dir option as I think that the entire premise is wrong. During development, you want to use an editable install, which does modify the source tree. And if you're just installing, then you don't care about cache. And there is also nothing preventing pip from caching the temporary directory, which may contain build artifacts.
On Aug 24, 2017 8:41 AM, "xoviat" <xov...@gmail.com> wrote: > ---------- Forwarded message ---------- > From: "xoviat" <xov...@gmail.com> > Date: Aug 24, 2017 8:39 AM > Subject: Re: [Distutils] PEP 517 again > To: "Thomas Kluyver" <tho...@kluyver.me.uk> > Cc: > > That's actually the general argument against exceptions and why golang > doesn't have them. I have not seen notimplemented used in the wild ever > though. > > Also, regarding the build_dir argument, it won't be used in pip. The pip > devs may have said that but it's too much work to support now and most of > them seem to have a shortage of time. Pip will be copying to a temporary > directory for a long time. > > On Aug 24, 2017 8:28 AM, "Thomas Kluyver" <tho...@kluyver.me.uk> wrote: > >> On Thu, Aug 24, 2017, at 02:21 PM, xoviat wrote: >> >> I mean is this golang or Python? In Python, you raise notimplementederror. >> >> >> But there's a NotImplemented singleton in Python as well. The argument >> for using a return value is that the hook code has to deliberately return >> that, whereas a NotImplementedError could bubble up from some internal >> call, in which case it should really be registered as an error. >> >
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