import logging from optparse import Values from typing import List from pip._internal.cli.base_command import Command from pip._internal.cli.status_codes import ERROR, SUCCESS from pip._internal.operations.check import ( check_package_set, create_package_set_from_installed, warn_legacy_versions_and_specifiers, ) from pip._internal.utils.misc import write_output logger = logging.getLogger(__name__) class CheckCommand(Command): """Verify installed packages have compatible dependencies.""" usage = """ %prog [options]""" def run(self, options: Values, args: List[str]) -> int: package_set, parsing_probs = create_package_set_from_installed() warn_legacy_versions_and_specifiers(package_set) missing, conflicting = check_package_set(package_set) for project_name in missing: version = package_set[project_name].version for dependency in missing[project_name]: write_output( "%s %s requires %s, which is not installed.", project_name, version, dependency[0], ) for project_name in conflicting: version = package_set[project_name].version for dep_name, dep_version, req in conflicting[project_name]: write_output( "%s %s has requirement %s, but you have %s %s.", project_name, version, req, dep_name, dep_version, ) if missing or conflicting or parsing_probs: return ERROR else: write_output("No broken requirements found.") return SUCCESS