> On Jul 14, 2017, at 9:46 AM, Thomas Kluyver <tho...@kluyver.me.uk> wrote: > > On Fri, Jul 14, 2017, at 11:59 AM, Nathaniel Smith wrote: >> What are the advantages of this design, as compared to the >> fallback of doing unconditional copytree (like pip does now and may >> well continue doing for years to come regardless of what we say here), > > I don't think pip currently does copytree. Naively copying everything > may be very slow, especially on Windows, because it includes things like > the .git subdirectory. If you exclude the .git subdirectory, you break > tools like setuptools_scm which rely on the VCS for version numbers.
Still processing this new direction, but just FYI we *do* do copy tree today. It is naive and it is slow in many cases. — Donald Stufft
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