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268 lines
9.0 KiB
268 lines
9.0 KiB
"""Extensions to the 'distutils' for large or complex distributions"""
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import functools
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import os
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import re
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import warnings
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import _distutils_hack.override # noqa: F401
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import distutils.core
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from distutils.errors import DistutilsOptionError
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from distutils.util import convert_path as _convert_path
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from ._deprecation_warning import SetuptoolsDeprecationWarning
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import setuptools.version
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from setuptools.extension import Extension
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from setuptools.dist import Distribution
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from setuptools.depends import Require
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from setuptools.discovery import PackageFinder, PEP420PackageFinder
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from . import monkey
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from . import logging
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__all__ = [
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'setup',
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'Distribution',
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'Command',
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'Extension',
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'Require',
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'SetuptoolsDeprecationWarning',
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'find_packages',
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'find_namespace_packages',
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]
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__version__ = setuptools.version.__version__
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bootstrap_install_from = None
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find_packages = PackageFinder.find
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find_namespace_packages = PEP420PackageFinder.find
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def _install_setup_requires(attrs):
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# Note: do not use `setuptools.Distribution` directly, as
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# our PEP 517 backend patch `distutils.core.Distribution`.
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class MinimalDistribution(distutils.core.Distribution):
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"""
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A minimal version of a distribution for supporting the
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fetch_build_eggs interface.
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"""
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def __init__(self, attrs):
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_incl = 'dependency_links', 'setup_requires'
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filtered = {k: attrs[k] for k in set(_incl) & set(attrs)}
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super().__init__(filtered)
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# Prevent accidentally triggering discovery with incomplete set of attrs
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self.set_defaults._disable()
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def _get_project_config_files(self, filenames=None):
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"""Ignore ``pyproject.toml``, they are not related to setup_requires"""
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try:
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cfg, toml = super()._split_standard_project_metadata(filenames)
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return cfg, ()
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except Exception:
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return filenames, ()
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def finalize_options(self):
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"""
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Disable finalize_options to avoid building the working set.
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Ref #2158.
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"""
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dist = MinimalDistribution(attrs)
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# Honor setup.cfg's options.
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dist.parse_config_files(ignore_option_errors=True)
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if dist.setup_requires:
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_fetch_build_eggs(dist)
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def _fetch_build_eggs(dist):
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try:
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dist.fetch_build_eggs(dist.setup_requires)
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except Exception as ex:
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msg = """
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It is possible a package already installed in your system
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contains an version that is invalid according to PEP 440.
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You can try `pip install --use-pep517` as a workaround for this problem,
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or rely on a new virtual environment.
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If the problem refers to a package that is not installed yet,
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please contact that package's maintainers or distributors.
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"""
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if "InvalidVersion" in ex.__class__.__name__:
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if hasattr(ex, "add_note"):
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ex.add_note(msg) # PEP 678
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else:
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dist.announce(f"\n{msg}\n")
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raise
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def setup(**attrs):
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# Make sure we have any requirements needed to interpret 'attrs'.
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logging.configure()
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_install_setup_requires(attrs)
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return distutils.core.setup(**attrs)
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setup.__doc__ = distutils.core.setup.__doc__
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_Command = monkey.get_unpatched(distutils.core.Command)
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class Command(_Command):
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"""
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Setuptools internal actions are organized using a *command design pattern*.
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This means that each action (or group of closely related actions) executed during
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the build should be implemented as a ``Command`` subclass.
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These commands are abstractions and do not necessarily correspond to a command that
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can (or should) be executed via a terminal, in a CLI fashion (although historically
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they would).
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When creating a new command from scratch, custom defined classes **SHOULD** inherit
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from ``setuptools.Command`` and implement a few mandatory methods.
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Between these mandatory methods, are listed:
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.. method:: initialize_options(self)
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Set or (reset) all options/attributes/caches used by the command
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to their default values. Note that these values may be overwritten during
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the build.
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.. method:: finalize_options(self)
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Set final values for all options/attributes used by the command.
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Most of the time, each option/attribute/cache should only be set if it does not
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have any value yet (e.g. ``if self.attr is None: self.attr = val``).
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.. method:: run(self)
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Execute the actions intended by the command.
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(Side effects **SHOULD** only take place when ``run`` is executed,
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for example, creating new files or writing to the terminal output).
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A useful analogy for command classes is to think of them as subroutines with local
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variables called "options". The options are "declared" in ``initialize_options()``
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and "defined" (given their final values, aka "finalized") in ``finalize_options()``,
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both of which must be defined by every command class. The "body" of the subroutine,
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(where it does all the work) is the ``run()`` method.
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Between ``initialize_options()`` and ``finalize_options()``, ``setuptools`` may set
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the values for options/attributes based on user's input (or circumstance),
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which means that the implementation should be careful to not overwrite values in
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``finalize_options`` unless necessary.
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Please note that other commands (or other parts of setuptools) may also overwrite
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the values of the command's options/attributes multiple times during the build
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process.
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Therefore it is important to consistently implement ``initialize_options()`` and
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``finalize_options()``. For example, all derived attributes (or attributes that
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depend on the value of other attributes) **SHOULD** be recomputed in
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``finalize_options``.
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When overwriting existing commands, custom defined classes **MUST** abide by the
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same APIs implemented by the original class. They also **SHOULD** inherit from the
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original class.
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"""
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command_consumes_arguments = False
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def __init__(self, dist, **kw):
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"""
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Construct the command for dist, updating
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vars(self) with any keyword parameters.
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"""
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super().__init__(dist)
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vars(self).update(kw)
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def _ensure_stringlike(self, option, what, default=None):
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val = getattr(self, option)
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if val is None:
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setattr(self, option, default)
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return default
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elif not isinstance(val, str):
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raise DistutilsOptionError(
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"'%s' must be a %s (got `%s`)" % (option, what, val)
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)
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return val
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def ensure_string_list(self, option):
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r"""Ensure that 'option' is a list of strings. If 'option' is
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currently a string, we split it either on /,\s*/ or /\s+/, so
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"foo bar baz", "foo,bar,baz", and "foo, bar baz" all become
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["foo", "bar", "baz"].
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..
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TODO: This method seems to be similar to the one in ``distutils.cmd``
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Probably it is just here for backward compatibility with old Python versions?
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:meta private:
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"""
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val = getattr(self, option)
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if val is None:
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return
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elif isinstance(val, str):
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setattr(self, option, re.split(r',\s*|\s+', val))
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else:
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if isinstance(val, list):
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ok = all(isinstance(v, str) for v in val)
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else:
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ok = False
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if not ok:
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raise DistutilsOptionError(
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"'%s' must be a list of strings (got %r)" % (option, val)
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)
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def reinitialize_command(self, command, reinit_subcommands=0, **kw):
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cmd = _Command.reinitialize_command(self, command, reinit_subcommands)
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vars(cmd).update(kw)
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return cmd
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def _find_all_simple(path):
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"""
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Find all files under 'path'
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"""
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results = (
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os.path.join(base, file)
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for base, dirs, files in os.walk(path, followlinks=True)
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for file in files
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)
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return filter(os.path.isfile, results)
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def findall(dir=os.curdir):
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"""
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Find all files under 'dir' and return the list of full filenames.
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Unless dir is '.', return full filenames with dir prepended.
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"""
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files = _find_all_simple(dir)
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if dir == os.curdir:
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make_rel = functools.partial(os.path.relpath, start=dir)
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files = map(make_rel, files)
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return list(files)
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@functools.wraps(_convert_path)
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def convert_path(pathname):
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from inspect import cleandoc
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msg = """
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The function `convert_path` is considered internal and not part of the public API.
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Its direct usage by 3rd-party packages is considered deprecated and the function
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may be removed in the future.
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"""
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warnings.warn(cleandoc(msg), SetuptoolsDeprecationWarning)
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return _convert_path(pathname)
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class sic(str):
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"""Treat this string as-is (https://en.wikipedia.org/wiki/Sic)"""
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# Apply monkey patches
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monkey.patch_all()
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