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#!/usr/bin/env python
#
# Find the build and runtime dependencies for a given Python package
#
# Copyright (C) 2014 Codethink Limited
#
# This program 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; version 2 of the License.
#
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from __future__ import print_function
import sys
import subprocess
import os
import requirements
DEBUG = False
# TODO: I'm guessing these things are probably standard somewhere
def warn(*args, **kwargs):
print('%s:' % sys.argv[0], *args, file=sys.stderr, **kwargs)
def error(*args, **kwargs):
warn(*args, **kwargs)
sys.exit(1)
def debug(s):
if DEBUG:
print(s)
def find_build_deps(source, name, version=None):
debug('source: %s' % source)
debug('name: %s' % name)
debug('version: %s' % version)
# This amounts to running python setup.py egg_info and checking
# the resulting egg_info dir for a file called setup_requires.txt
# So it's $name.egg_info
p = subprocess.Popen(['python', 'setup.py', 'egg_info'], cwd=source,
stdout=subprocess.PIPE)
if p.wait() != 0:
error('egg_info command failed')
egg_dir = '%s.egg_info' % name
build_deps_file = os.path.join(source, egg_dir, 'setup_requires.txt')
# Check whether there's a setup_requires.txt
if not os.path.isfile(build_deps_file):
print('%s has no build dependencies' % name)
else:
with open(build_deps_file) as f:
print(list(f.read()))
#json = parse_requirements(...)
if len(sys.argv) not in [3, 4]:
print('usage: %s PACKAGE_SOURCE_DIR NAME [VERSION]' % sys.argv[0])
sys.exit(1)
# Ignore the issue of dependency conflicts for now
# First, given a source return build dependencies in json from
find_build_deps(*sys.argv[1:])
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