I see you've noticed wheel was released in an imperfect state. Let's add a Zip-Safe flag to the WHEEL file, values of "true" and "false" same as Root-Is-Purelib. Daniel On Thu, Jan 30, 2014 at 10:44 AM, Eric V. Smith <eric@trueblade.com> wrote:
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On 01/30/2014 10:23 AM, Donald Stufft wrote:
On Jan 30, 2014, at 10:12 AM, Paul Moore <p.f.moore@gmail.com> wrote:
On 30 January 2014 15:03, Donald Stufft <donald@stufft.io> wrote:
For those following along at home who have no interest in supporting zipped Wheels who want to disclaim support for it, here's how you do zip_safe=False for Wheels: https://gist.github.com/dstufft/8710270.
Note that this will also prevent use in py2exe, cx_Freeze and any similar bundling technologies. Presumably that's what you want, as any issues are identical, but it's worth being clear.
Paul
Sure, using a library via zip import when it wasn't designed to be used as such is an anti pattern.
The flag really needs to convey 2 meanings: - - There are some C extensions here that can't be loaded unless they live on a real filesystem path. - - There is some code (maybe in this package, maybe in another package that uses this one) that uses this package's __file__, and that code won't work unless __file__ points to a real filesystem path.
There are any number of possible importers that would fail due to these 2 cases. I've personally written one that loads modules from a database. It should respect this flag, too.
Which is a long way of saying: I think calling it "zip_safe" is a misnomer. The flag is really conveying "I don't need to be on a filesystem".
Whether there should be 2 different flags for the two different problems (C extension and __file__), I can't say. They do seem to go hand-in-hand.
Eric.
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