> On Aug 27, 2014, at 2:50 AM, Paul Moore <[email protected]> wrote: > > tl; dr; If you know of a project that can't be successfully installed > with "pip wheel proj; pip install /path/to/the/wheel.whl" can you let > me know the details? > > One of the longer-term goals of the introduction of wheels was to > split the build and install steps for a package - specifically, in > pip, to restrict "pip install" to installing from wheels, and when no > wheel is available, to (transparently) run "pip wheel" on the sdist > followed by "pip install on the generated wheel". During a discussion > yesterday, I realised that I don't know how close we are to that goal. > So I'm looking for information on packages which don't install > properly from wheels at the moment. If anyone has examples of packages > where replacing "pip install foo" with "pip wheel -w /tmp/xxx; pip > install /tmp/xxx/*.whl" does not result in an equivalent install, > could they post them here with details of how & why they fail? > > Things I already know about (but would like specific examples): > > 1. Post-install steps included in setup.py. That should be covered by > the support in Metadata 2.0. I'd also be interested in how much of an > issue omitting the postinstall would be in practice (for instance many > such steps just set up "Start Menu" type shortcuts, which are not > essential for the package to be usable). > 2. Actually, that's the only one :-) > > Things that should not be a problem (but might be): > > 1. Numpy (and the scipy stack) need better tagging facilities for > wheels - but that wouldn't matter for a wheel that's built, used, then > thrown away. > 2. Some things are complex to build - but I don't know of any cases > where building a wheel is *more* complex than installing, and I don't > see how it could be, in theory. > 3. Projects that customise setup.py so much that they aren't > compatible with setuptools and bdist_wheel. Such projects are quite > probably already incompatible with pip (which injects setuptools when > running setup.py anyway) and so not relevant for this discussion. But > if any do work with "pip install" but not "pip wheel", I'd like to > hear about them. > > Thanks in advance for any information. > Paul > _______________________________________________ > Distutils-SIG maillist - [email protected] > https://mail.python.org/mailman/listinfo/distutils-sig
Numpy (and other SciPy stack) has the problem too that it uses numpy.distutils so I'm not even sure if ``pip wheel`` actually works on it at all or not. They might have their own support for ``setup.py bdist_wheel`` though I don't know. --- Donald Stufft PGP: 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA
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