import logging from pip.basecommand import Command from pip.operations.check import check_requirements from pip.utils import get_installed_distributions logger = logging.getLogger(__name__) class CheckCommand(Command): """Verify installed packages have compatible dependencies.""" name = 'check' usage = """ %prog [options]""" summary = 'Verify installed packages have compatible dependencies.' def run(self, options, args): dists = get_installed_distributions(local_only=False, skip=()) missing_reqs_dict, incompatible_reqs_dict = check_requirements(dists) for dist in dists: key = '%s==%s' % (dist.project_name, dist.version) for requirement in missing_reqs_dict.get(key, []): logger.info( "%s %s requires %s, which is not installed.", dist.project_name, dist.version, requirement.project_name) for requirement, actual in incompatible_reqs_dict.get(key, []): logger.info( "%s %s has requirement %s, but you have %s %s.", dist.project_name, dist.version, requirement, actual.project_name, actual.version) if missing_reqs_dict or incompatible_reqs_dict: return 1 else: logger.info("No broken requirements found.")