requirements.py
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	# -- coding: utf-8 --
	# This file is part of Invenio.
	# Copyright (C) 2013, 2014 CERN.
	#
	# Invenio is free software; you can redistribute it and/or
	# modify it under the terms of the GNU General Public License as
	# published by the Free Software Foundation; either version 2 of the
	# License, or (at your option) any later version.
	#
	# Invenio is distributed in the hope that it will be useful, but
	# WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	# General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with Invenio; if not, write to the Free Software Foundation, Inc.,
	# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

	"""Generate minimal requirements from setup.py."""

	from __future__ import print_function

	import mock
	import pkg_resources
	import setuptools
	import sys


	if __name__ == '__main__':
	with mock.patch.object(setuptools, 'setup') as mock_setup:
	import setup # pylint: disable=F401

	# called arguments are in `mock_setup.call_args`
	args, kwargs = mock_setup.call_args
	install_requires = kwargs.get('install_requires', [])

	for pkg in pkg_resources.parse_requirements(install_requires):
	if len(pkg.specs):
	if pkg.specs[0][0] == '>=':
	print("{0.project_name}=={0.specs[0][1]}".format(pkg))
	elif pkg.specs[0][0] == '>':
	print(
	"{0.project_name} specify exact minimal version using "
	"'>=' instead of '>'.".format(pkg), file=sys.stderr)