On Sat, Mar 1, 2014 at 4:47 PM, Jim Fulton <jim@zope.com> wrote:

On Thu, Feb 27, 2014 at 6:49 AM, Piotr Dobrogost
<p@google-groups-2014.dobrogost.net> 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.

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