On 22.04.2015 12:38, Robert Collins wrote:
On 22 April 2015 at 22:13, Christoph Schmitt <dev-mailings@gongy.de> wrote:
Hello again,
since I haven't got any replies yet I'm trying to make myself a bit more precise now. I consider the behaviour described in my original posting a bug. I posted to this list because the setuptools docs say "Please use the distutils-sig mailing list [3] for questions and discussion about
Test 3) DO NOT delcare namespace_packages=['coolpkg'] in setup.py of each project Result: all modules can be imported
This is correct AFAICT.
the setuptools namespace_packages thing predates PEP-420, and because PEP-420 namespaces don't interoperate with .pth file based packages (expecially when you get into interactions between system non-PEP-420 + virtualenv PEP-420 packages!) changing this is super hard: you'll guarantee to break many existing installs.
Perhaps there should be a new keyword, but since nothing is needed to make things work, it seems like it would be rather redundant.
You can make use of the namespace_packages keyword argument to setup() optional depending on which Python version is running it. I guess that's the only way forward unless you want to break the package for previous Python versions. However, doing so may be hard for namespaces which are used by a lot of packages. Perhaps setuptools could simply ignore the keyword for Python 3.3+ and then rely on PEP 420 to get things working in more or less the same way: https://www.python.org/dev/peps/pep-0420/ -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Apr 22 2015)
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