On Thu, Feb 27, 2014 at 6:49 AM, Piotr Dobrogost wrote:

Hi!

I've seen people putting 'setuptools' in 'install_requires' in setup.py starting with import from setuptools like this: from setuptools import setup, find_packages

Does it make any sense? In what circumstances should 'setuptools' be listed in 'install_requires' or 'setup_requires'?

It makes sense when you use setuptools to implement namespace packages. So, for example in zope packages, the __init__.py in the zope namespace package typically has: import pkg_resources pkg_resources.declare_namespace(__name__) Jim -- Jim Fulton http://www.linkedin.com/in/jimfulton

with pip 1.5 able to install from wheel without setuptools, it's more critical now to declare the dependency (in the cases PJ mentions), to ensure setuptools gets installed. On Sat, Mar 1, 2014 at 6:49 PM, PJ Eby wrote:

On Sat, Mar 1, 2014 at 4:47 PM, Jim Fulton wrote:

...

On Thu, Feb 27, 2014 at 6:49 AM, Piotr Dobrogost wrote:

...

Hi!

I've seen people putting 'setuptools' in 'install_requires' in setup.py starting with import from setuptools like this: from setuptools import setup, find_packages

Does it make any sense? In what circumstances should 'setuptools' be listed in 'install_requires' or 'setup_requires'?

It makes sense when you use setuptools to implement namespace packages.

So, for example in zope packages, the __init__.py in the zope namespace package typically has:

import pkg_resources pkg_resources.declare_namespace(__name__)

It also makes sense if you use entry points, the plugin finder, or any other pkg_resources features, for that matter. ;-) Or if you reuse setuptools functionality (e.g. easy_install) to install plugins for your app.

But in general, it only makes sense to depend on setuptools if your actual project contents (aside from setup.py) are importing things from pkg_resources or setuptools.

_______________________________________________ Distutils-SIG maillist - Distutils-SIG@python.org https://mail.python.org/mailman/listinfo/distutils-sig