Re: [Distutils] setup.py --install-requires?

April 8, 2009

      At 01:28 PM 4/8/2009 -0700, Sridhar Ratnakumar wrote:
...
For example, zc.catalog declares these dependencies in its setup.py
install_requires=['ZODB3',
                        'pytz',
                        'setuptools',
                        'zope.catalog',
                        'zope.container',
                        'zope.component',
                        'zope.i18nmessageid',
                        'zope.index>=3.5.1',
                        'zope.interface',
                        'zope.publisher',
                        'zope.schema',
                        'zope.security',
                        ],
Is it possible to reliably get this list in a custom Python code 
without having to parse setup.py?
Something like this should do the trick:

import tempfile, os.path
from setuptools.sandbox import run_setup

def get_requires(setup_dir, empty_tmpdir):
     tmpdir = tempfile.mkdtemp(prefix="egginfotmp-")
     run_setup(os.path.join(setup_dir,'setup.py'), ['-e', tmpdir])
     for dist in pkg_resources.find_distributions(tmpdir, True):
         return dist.requires()
     else:
         raise RuntimeError("egg_info didn't work")

You'll get back a list of pkg_resources.Requirement objects rather 
than strings, but you can turn them back into strings if you like.

Re: [Distutils] setup.py --install-requires?

P.J. Eby