529 lines
25 KiB
Python
Executable File
529 lines
25 KiB
Python
Executable File
#!/usr/bin/python3 -s
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# -*- coding: utf-8 -*-
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#
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# Copyright 2010 Per Øyvind Karlsen <proyvind@moondrake.org>
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# Copyright 2015 Neal Gompa <ngompa13@gmail.com>
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# Copyright 2020 SUSE LLC
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#
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# This program is free software. It may be redistributed and/or modified under
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# the terms of the LGPL version 2.1 (or later).
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#
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# RPM python dependency generator, using .egg-info/.egg-link/.dist-info data
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#
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from __future__ import print_function
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import argparse
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from distutils.sysconfig import get_python_lib
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from os.path import dirname, sep
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import re
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from sys import argv, stdin, stderr
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from warnings import warn
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from packaging.requirements import Requirement as Requirement_
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from packaging.version import parse
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import packaging.markers
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# Monkey patching packaging.markers to handle extras names in a
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# case-insensitive manner:
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# pip considers dnspython[DNSSEC] and dnspython[dnssec] to be equal, but
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# packaging markers treat extras in a case-sensitive manner. To solve this
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# issue, we introduce a comparison operator that compares case-insensitively
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# if both sides of the comparison are strings. And then we inject this
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# operator into packaging.markers to be used when comparing names of extras.
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# Fedora BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1936875
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# Upstream issue: https://discuss.python.org/t/what-extras-names-are-treated-as-equal-and-why/7614
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# - After it's established upstream what is the canonical form of an extras
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# name, we plan to open an issue with packaging to hopefully solve this
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# there without having to resort to monkeypatching.
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def str_lower_eq(a, b):
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if isinstance(a, str) and isinstance(b, str):
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return a.lower() == b.lower()
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else:
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return a == b
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packaging.markers._operators["=="] = str_lower_eq
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try:
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from importlib.metadata import PathDistribution
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except ImportError:
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from importlib_metadata import PathDistribution
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try:
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from pathlib import Path
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except ImportError:
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from pathlib2 import Path
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def normalize_name(name):
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"""https://www.python.org/dev/peps/pep-0503/#normalized-names"""
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return re.sub(r'[-_.]+', '-', name).lower()
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def legacy_normalize_name(name):
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"""Like pkg_resources Distribution.key property"""
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return re.sub(r'[-_]+', '-', name).lower()
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class Requirement(Requirement_):
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def __init__(self, requirement_string):
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super(Requirement, self).__init__(requirement_string)
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self.normalized_name = normalize_name(self.name)
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self.legacy_normalized_name = legacy_normalize_name(self.name)
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class Distribution(PathDistribution):
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def __init__(self, path):
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super(Distribution, self).__init__(Path(path))
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self.normalized_name = normalize_name(self.name)
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self.legacy_normalized_name = legacy_normalize_name(self.name)
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self.requirements = [Requirement(r) for r in self.requires or []]
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self.extras = [
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v for k, v in self.metadata.items() if k == 'Provides-Extra']
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self.py_version = self._parse_py_version(path)
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# `name` is defined as a property exactly like this in Python 3.10 in the
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# PathDistribution class. Due to that we can't redefine `name` as a normal
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# attribute. So we copied the Python 3.10 definition here into the code so
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# that it works also on previous Python/importlib_metadata versions.
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@property
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def name(self):
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"""Return the 'Name' metadata for the distribution package."""
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return self.metadata['Name']
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def _parse_py_version(self, path):
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# Try to parse the Python version from the path the metadata
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# resides at (e.g. /usr/lib/pythonX.Y/site-packages/...)
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res = re.search(r"/python(?P<pyver>\d+\.\d+)/", path)
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if res:
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return res.group('pyver')
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# If that hasn't worked, attempt to parse it from the metadata
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# directory name
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res = re.search(r"-py(?P<pyver>\d+.\d+)[.-]egg-info$", path)
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if res:
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return res.group('pyver')
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return None
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def requirements_for_extra(self, extra):
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extra_deps = []
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for req in self.requirements:
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if not req.marker:
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continue
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if req.marker.evaluate(get_marker_env(self, extra)):
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extra_deps.append(req)
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return extra_deps
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def __repr__(self):
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return '{} from {}'.format(self.name, self._path)
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class RpmVersion():
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def __init__(self, version_id):
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version = parse(version_id)
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if isinstance(version._version, str):
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self.version = version._version
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else:
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self.epoch = version._version.epoch
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self.version = list(version._version.release)
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self.pre = version._version.pre
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self.dev = version._version.dev
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self.post = version._version.post
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def increment(self):
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self.version[-1] += 1
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self.pre = None
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self.dev = None
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self.post = None
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return self
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def __str__(self):
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if isinstance(self.version, str):
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return self.version
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if self.epoch:
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rpm_epoch = str(self.epoch) + ':'
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else:
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rpm_epoch = ''
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while len(self.version) > 1 and self.version[-1] == 0:
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self.version.pop()
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rpm_version = '.'.join(str(x) for x in self.version)
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if self.pre:
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rpm_suffix = '~{}'.format(''.join(str(x) for x in self.pre))
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elif self.dev:
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rpm_suffix = '~~{}'.format(''.join(str(x) for x in self.dev))
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elif self.post:
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rpm_suffix = '^post{}'.format(self.post[1])
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else:
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rpm_suffix = ''
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return '{}{}{}'.format(rpm_epoch, rpm_version, rpm_suffix)
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def convert_compatible(name, operator, version_id):
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if version_id.endswith('.*'):
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print("*** INVALID_REQUIREMENT_ERROR___SEE_STDERR ***")
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print('Invalid requirement: {} {} {}'.format(name, operator, version_id), file=stderr)
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exit(65) # os.EX_DATAERR
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version = RpmVersion(version_id)
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if len(version.version) == 1:
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print("*** INVALID_REQUIREMENT_ERROR___SEE_STDERR ***")
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print('Invalid requirement: {} {} {}'.format(name, operator, version_id), file=stderr)
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exit(65) # os.EX_DATAERR
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upper_version = RpmVersion(version_id)
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upper_version.version.pop()
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upper_version.increment()
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return '({} >= {} with {} < {})'.format(
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name, version, name, upper_version)
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def convert_equal(name, operator, version_id):
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if version_id.endswith('.*'):
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version_id = version_id[:-2] + '.0'
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return convert_compatible(name, '~=', version_id)
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version = RpmVersion(version_id)
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return '{} = {}'.format(name, version)
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def convert_arbitrary_equal(name, operator, version_id):
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if version_id.endswith('.*'):
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print("*** INVALID_REQUIREMENT_ERROR___SEE_STDERR ***")
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print('Invalid requirement: {} {} {}'.format(name, operator, version_id), file=stderr)
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exit(65) # os.EX_DATAERR
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version = RpmVersion(version_id)
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return '{} = {}'.format(name, version)
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def convert_not_equal(name, operator, version_id):
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if version_id.endswith('.*'):
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version_id = version_id[:-2]
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version = RpmVersion(version_id)
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lower_version = RpmVersion(version_id).increment()
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else:
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version = RpmVersion(version_id)
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lower_version = version
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return '({} < {} or {} > {})'.format(
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name, version, name, lower_version)
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def convert_ordered(name, operator, version_id):
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if version_id.endswith('.*'):
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# PEP 440 does not define semantics for prefix matching
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# with ordered comparisons
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version_id = version_id[:-2]
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version = RpmVersion(version_id)
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if operator == '>':
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# distutils will allow a prefix match with '>'
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operator = '>='
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if operator == '<=':
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# distutils will not allow a prefix match with '<='
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operator = '<'
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else:
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version = RpmVersion(version_id)
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return '{} {} {}'.format(name, operator, version)
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OPERATORS = {'~=': convert_compatible,
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'==': convert_equal,
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'===': convert_arbitrary_equal,
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'!=': convert_not_equal,
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'<=': convert_ordered,
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'<': convert_ordered,
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'>=': convert_ordered,
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'>': convert_ordered}
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def convert(name, operator, version_id):
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try:
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return OPERATORS[operator](name, operator, version_id)
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except Exception as exc:
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raise RuntimeError("Cannot process Python package version `{}` for name `{}`".
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format(version_id, name)) from exc
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def get_marker_env(dist, extra):
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# packaging uses a default environment using
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# platform.python_version to evaluate if a dependency is relevant
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# based on environment markers [1],
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# e.g. requirement `argparse;python_version<"2.7"`
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#
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# Since we're running this script on one Python version while
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# possibly evaluating packages for different versions, we
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# set up an environment with the version we want to evaluate.
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#
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# [1] https://www.python.org/dev/peps/pep-0508/#environment-markers
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return {"python_full_version": dist.py_version,
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"python_version": dist.py_version,
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"extra": extra}
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if __name__ == "__main__":
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"""To allow this script to be importable (and its classes/functions
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reused), actions are performed only when run as a main script."""
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parser = argparse.ArgumentParser(prog=argv[0])
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group = parser.add_mutually_exclusive_group(required=True)
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group.add_argument('-P', '--provides', action='store_true', help='Print Provides')
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group.add_argument('-R', '--requires', action='store_true', help='Print Requires')
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group.add_argument('-r', '--recommends', action='store_true', help='Print Recommends')
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group.add_argument('-C', '--conflicts', action='store_true', help='Print Conflicts')
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group.add_argument('-E', '--extras', action='store_true', help='[Unused] Generate spec file snippets for extras subpackages')
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group_majorver = parser.add_mutually_exclusive_group()
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group_majorver.add_argument('-M', '--majorver-provides', action='store_true', help='Print extra Provides with Python major version only')
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group_majorver.add_argument('--majorver-provides-versions', action='append',
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help='Print extra Provides with Python major version only for listed '
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'Python VERSIONS (appended or comma separated without spaces, e.g. 2.7,3.9)')
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parser.add_argument('-m', '--majorver-only', action='store_true', help='Print Provides/Requires with Python major version only')
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parser.add_argument('-n', '--normalized-names-format', action='store',
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default="legacy-dots", choices=["pep503", "legacy-dots"],
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help='Format of normalized names according to pep503 or legacy format that allows dots [default]')
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parser.add_argument('--normalized-names-provide-both', action='store_true',
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help='Provide both `pep503` and `legacy-dots` format of normalized names (useful for a transition period)')
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parser.add_argument('-L', '--legacy-provides', action='store_true', help='Print extra legacy pythonegg Provides')
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parser.add_argument('-l', '--legacy', action='store_true', help='Print legacy pythonegg Provides/Requires instead')
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parser.add_argument('--require-extras-subpackages', action='store_true',
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help="If there is a dependency on a package with extras functionality, require the extras subpackage")
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parser.add_argument('--package-name', action='store', help="Name of the RPM package that's being inspected. Required for extras requires/provides to work.")
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parser.add_argument('files', nargs=argparse.REMAINDER, help="Files from the RPM package that are to be inspected, can also be supplied on stdin")
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args = parser.parse_args()
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py_abi = args.requires
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py_deps = {}
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if args.majorver_provides_versions:
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# Go through the arguments (can be specified multiple times),
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# and parse individual versions (can be comma-separated)
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args.majorver_provides_versions = [v for vstring in args.majorver_provides_versions
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for v in vstring.split(",")]
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# If normalized_names_require_pep503 is True we require the pep503
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# normalized name, if it is False we provide the legacy normalized name
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normalized_names_require_pep503 = args.normalized_names_format == "pep503"
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# If normalized_names_provide_pep503/legacy is True we provide the
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# pep503/legacy normalized name, if it is False we don't
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normalized_names_provide_pep503 = \
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args.normalized_names_format == "pep503" or args.normalized_names_provide_both
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normalized_names_provide_legacy = \
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args.normalized_names_format == "legacy-dots" or args.normalized_names_provide_both
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# At least one type of normalization must be provided
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assert normalized_names_provide_pep503 or normalized_names_provide_legacy
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# Is this script being run for an extras subpackage?
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extras_subpackage = None
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if args.package_name and '+' in args.package_name:
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# The extras names are encoded in the package names after the + sign.
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# We take the part after the rightmost +, ignoring when empty,
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# this allows packages like nicotine+ or c++ to work fine.
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# While packages with names like +spam or foo+bar would break,
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# names started with the plus sign are not very common
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# and pluses in the middle can be easily replaced with dashes.
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# Python extras names don't contain pluses according to PEP 508.
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package_name_parts = args.package_name.rpartition('+')
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extras_subpackage = package_name_parts[2] or None
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for f in (args.files or stdin.readlines()):
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f = f.strip()
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lower = f.lower()
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name = 'python(abi)'
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# add dependency based on path, versioned if within versioned python directory
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if py_abi and (lower.endswith('.py') or lower.endswith('.pyc') or lower.endswith('.pyo')):
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if name not in py_deps:
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py_deps[name] = []
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purelib = get_python_lib(standard_lib=0, plat_specific=0).split(version[:3])[0]
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platlib = get_python_lib(standard_lib=0, plat_specific=1).split(version[:3])[0]
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for lib in (purelib, platlib):
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if lib in f:
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spec = ('==', f.split(lib)[1].split(sep)[0])
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if spec not in py_deps[name]:
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py_deps[name].append(spec)
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# XXX: hack to workaround RPM internal dependency generator not passing directories
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lower_dir = dirname(lower)
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if lower_dir.endswith('.egg') or \
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lower_dir.endswith('.egg-info') or \
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lower_dir.endswith('.dist-info'):
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lower = lower_dir
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f = dirname(f)
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# Determine provide, requires, conflicts & recommends based on egg/dist metadata
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if lower.endswith('.egg') or \
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lower.endswith('.egg-info') or \
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lower.endswith('.dist-info'):
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dist = Distribution(f)
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if not dist.py_version:
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warn("Version for {!r} has not been found".format(dist), RuntimeWarning)
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continue
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# If processing an extras subpackage:
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# Check that the extras name is declared in the metadata, or
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# that there are some dependencies associated with the extras
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# name in the requires.txt (this is an outdated way to declare
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# extras packages).
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# - If there is an extras package declared only in requires.txt
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# without any dependencies, this check will fail. In that case
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# make sure to use updated metadata and declare the extras
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# package there.
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if extras_subpackage and extras_subpackage not in dist.extras and not dist.requirements_for_extra(extras_subpackage):
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print("*** PYTHON_EXTRAS_NOT_FOUND_ERROR___SEE_STDERR ***")
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print(f"\nError: The package name contains an extras name `{extras_subpackage}` that was not found in the metadata.\n"
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"Check if the extras were removed from the project. If so, consider removing the subpackage and obsoleting it from another.\n", file=stderr)
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exit(65) # os.EX_DATAERR
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if args.majorver_provides or args.majorver_provides_versions or \
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args.majorver_only or args.legacy_provides or args.legacy:
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# Get the Python major version
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pyver_major = dist.py_version.split('.')[0]
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if args.provides:
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extras_suffix = f"[{extras_subpackage}]" if extras_subpackage else ""
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# If egg/dist metadata says package name is python, we provide python(abi)
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if dist.normalized_name == 'python':
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name = 'python(abi)'
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if name not in py_deps:
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py_deps[name] = []
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py_deps[name].append(('==', dist.py_version))
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if not args.legacy or not args.majorver_only:
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if normalized_names_provide_legacy:
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name = 'python{}dist({}{})'.format(dist.py_version, dist.legacy_normalized_name, extras_suffix)
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if name not in py_deps:
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py_deps[name] = []
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if normalized_names_provide_pep503:
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name_ = 'python{}dist({}{})'.format(dist.py_version, dist.normalized_name, extras_suffix)
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if name_ not in py_deps:
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py_deps[name_] = []
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if args.majorver_provides or args.majorver_only or \
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(args.majorver_provides_versions and dist.py_version in args.majorver_provides_versions):
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if normalized_names_provide_legacy:
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pymajor_name = 'python{}dist({}{})'.format(pyver_major, dist.legacy_normalized_name, extras_suffix)
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if pymajor_name not in py_deps:
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py_deps[pymajor_name] = []
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if normalized_names_provide_pep503:
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pymajor_name_ = 'python{}dist({}{})'.format(pyver_major, dist.normalized_name, extras_suffix)
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if pymajor_name_ not in py_deps:
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py_deps[pymajor_name_] = []
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if args.legacy or args.legacy_provides:
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legacy_name = 'pythonegg({})({})'.format(pyver_major, dist.legacy_normalized_name)
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if legacy_name not in py_deps:
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py_deps[legacy_name] = []
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if dist.version:
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version = dist.version
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spec = ('==', version)
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if normalized_names_provide_legacy:
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if spec not in py_deps[name]:
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py_deps[name].append(spec)
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if args.majorver_provides or \
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(args.majorver_provides_versions and dist.py_version in args.majorver_provides_versions):
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py_deps[pymajor_name].append(spec)
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if normalized_names_provide_pep503:
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if spec not in py_deps[name_]:
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py_deps[name_].append(spec)
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if args.majorver_provides or \
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(args.majorver_provides_versions and dist.py_version in args.majorver_provides_versions):
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py_deps[pymajor_name_].append(spec)
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if args.legacy or args.legacy_provides:
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if spec not in py_deps[legacy_name]:
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py_deps[legacy_name].append(spec)
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if args.requires or (args.recommends and dist.extras):
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name = 'python(abi)'
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# If egg/dist metadata says package name is python, we don't add dependency on python(abi)
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if dist.normalized_name == 'python':
|
|
py_abi = False
|
|
if name in py_deps:
|
|
py_deps.pop(name)
|
|
elif py_abi and dist.py_version:
|
|
if name not in py_deps:
|
|
py_deps[name] = []
|
|
spec = ('==', dist.py_version)
|
|
if spec not in py_deps[name]:
|
|
py_deps[name].append(spec)
|
|
|
|
if extras_subpackage:
|
|
deps = [d for d in dist.requirements_for_extra(extras_subpackage)]
|
|
else:
|
|
deps = dist.requirements
|
|
|
|
# console_scripts/gui_scripts entry points need pkg_resources from setuptools
|
|
if (dist.entry_points and
|
|
(lower.endswith('.egg') or
|
|
lower.endswith('.egg-info'))):
|
|
groups = {ep.group for ep in dist.entry_points}
|
|
if {"console_scripts", "gui_scripts"} & groups:
|
|
# stick them first so any more specific requirement
|
|
# overrides it
|
|
deps.insert(0, Requirement('setuptools'))
|
|
# add requires/recommends based on egg/dist metadata
|
|
for dep in deps:
|
|
# Even if we're requiring `foo[bar]`, also require `foo`
|
|
# to be safe, and to make it discoverable through
|
|
# `repoquery --whatrequires`
|
|
extras_suffixes = [""]
|
|
if args.require_extras_subpackages and dep.extras:
|
|
# A dependency can have more than one extras,
|
|
# i.e. foo[bar,baz], so let's go through all of them
|
|
extras_suffixes += [f"[{e}]" for e in dep.extras]
|
|
|
|
for extras_suffix in extras_suffixes:
|
|
if normalized_names_require_pep503:
|
|
dep_normalized_name = dep.normalized_name
|
|
else:
|
|
dep_normalized_name = dep.legacy_normalized_name
|
|
|
|
if args.legacy:
|
|
name = 'pythonegg({})({})'.format(pyver_major, dep.legacy_normalized_name)
|
|
else:
|
|
if args.majorver_only:
|
|
name = 'python{}dist({}{})'.format(pyver_major, dep_normalized_name, extras_suffix)
|
|
else:
|
|
name = 'python{}dist({}{})'.format(dist.py_version, dep_normalized_name, extras_suffix)
|
|
|
|
if dep.marker and not args.recommends and not extras_subpackage:
|
|
if not dep.marker.evaluate(get_marker_env(dist, '')):
|
|
continue
|
|
|
|
if name not in py_deps:
|
|
py_deps[name] = []
|
|
for spec in dep.specifier:
|
|
if (spec.operator, spec.version) not in py_deps[name]:
|
|
py_deps[name].append((spec.operator, spec.version))
|
|
|
|
# Unused, for automatic sub-package generation based on 'extras' from egg/dist metadata
|
|
# TODO: implement in rpm later, or...?
|
|
if args.extras:
|
|
print(dist.extras)
|
|
for extra in dist.extras:
|
|
print('%%package\textras-{}'.format(extra))
|
|
print('Summary:\t{} extra for {} python package'.format(extra, dist.legacy_normalized_name))
|
|
print('Group:\t\tDevelopment/Python')
|
|
for dep in dist.requirements_for_extra(extra):
|
|
for spec in dep.specifier:
|
|
if spec.operator == '!=':
|
|
print('Conflicts:\t{} {} {}'.format(dep.legacy_normalized_name, '==', spec.version))
|
|
else:
|
|
print('Requires:\t{} {} {}'.format(dep.legacy_normalized_name, spec.operator, spec.version))
|
|
print('%%description\t{}'.format(extra))
|
|
print('{} extra for {} python package'.format(extra, dist.legacy_normalized_name))
|
|
print('%%files\t\textras-{}\n'.format(extra))
|
|
if args.conflicts:
|
|
# Should we really add conflicts for extras?
|
|
# Creating a meta package per extra with recommends on, which has
|
|
# the requires/conflicts in stead might be a better solution...
|
|
for dep in dist.requirements:
|
|
for spec in dep.specifier:
|
|
if spec.operator == '!=':
|
|
if dep.legacy_normalized_name not in py_deps:
|
|
py_deps[dep.legacy_normalized_name] = []
|
|
spec = ('==', spec.version)
|
|
if spec not in py_deps[dep.legacy_normalized_name]:
|
|
py_deps[dep.legacy_normalized_name].append(spec)
|
|
|
|
for name in sorted(py_deps):
|
|
if py_deps[name]:
|
|
# Print out versioned provides, requires, recommends, conflicts
|
|
spec_list = []
|
|
for spec in py_deps[name]:
|
|
spec_list.append(convert(name, spec[0], spec[1]))
|
|
if len(spec_list) == 1:
|
|
print(spec_list[0])
|
|
else:
|
|
# Sort spec_list so that the results can be tested easily
|
|
print('({})'.format(' with '.join(sorted(spec_list))))
|
|
else:
|
|
# Print out unversioned provides, requires, recommends, conflicts
|
|
print(name)
|