Re: Timestamp of installed files

On Sat, 4 Aug 2018 at 13:31, Jeroen Demeyer <[email protected]> wrote:
>
> On 2018-08-04 14:02, Thomas Kluyver wrote:
> > On Sat, Aug 4, 2018, at 9:34 AM, Paul Moore wrote:
> >> Whether timestamps are
> >> preserved by the wheel building process depends on the build system -
> >> so the question boils down to "does setup.py bdist_wheel preserve
> >> timestamps?" in the case of the setuptools backend - which is really a
> >> question for the wheel project. In the more general case, you'd have
> >> to ask the same question of flit, and any other backends you cared
> >> about.
> >
> > IIRC, Flit will preserve the timestamps of the files when you build a wheel
>
> For the record: my post wasn't about *building* a wheel, but about
> *installing* a wheel.

But given that the current behaviour of pip is to copy the timestamps
held in the wheel[1], where those timestamps came from is relevant to
the discussion, surely?

Paul

[1] Or is it? The wheel is expanded into a temporary directory, and
then copied from there to the final location. It's only step 2 that
has been confirmed to copy timestamps currently. I don't think anyone
has checked what the expansion step does.
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