Edit File: dist.py
# -*- coding: utf-8 -*- __all__ = ['Distribution'] import re import os import warnings import numbers import distutils.log import distutils.core import distutils.cmd import distutils.dist import itertools from collections import defaultdict from distutils.errors import ( DistutilsOptionError, DistutilsPlatformError, DistutilsSetupError, ) from distutils.util import rfc822_escape from distutils.version import StrictVersion from setuptools.extern import six from setuptools.extern import packaging from setuptools.extern.six.moves import map, filter, filterfalse from setuptools.depends import Require from setuptools import windows_support from setuptools.monkey import get_unpatched from setuptools.config import parse_configuration import pkg_resources from .py36compat import Distribution_parse_config_files __import__('setuptools.extern.packaging.specifiers') __import__('setuptools.extern.packaging.version') def _get_unpatched(cls): warnings.warn("Do not call this function", DeprecationWarning) return get_unpatched(cls) def get_metadata_version(dist_md): if dist_md.long_description_content_type or dist_md.provides_extras: return StrictVersion('2.1') elif (dist_md.maintainer is not None or dist_md.maintainer_email is not None or getattr(dist_md, 'python_requires', None) is not None): return StrictVersion('1.2') elif (dist_md.provides or dist_md.requires or dist_md.obsoletes or dist_md.classifiers or dist_md.download_url): return StrictVersion('1.1') return StrictVersion('1.0') # Based on Python 3.5 version def write_pkg_file(self, file): """Write the PKG-INFO format data to a file object. """ version = get_metadata_version(self) file.write('Metadata-Version: %s\n' % version) file.write('Name: %s\n' % self.get_name()) file.write('Version: %s\n' % self.get_version()) file.write('Summary: %s\n' % self.get_description()) file.write('Home-page: %s\n' % self.get_url()) if version < StrictVersion('1.2'): file.write('Author: %s\n' % self.get_contact()) file.write('Author-email: %s\n' % self.get_contact_email()) else: optional_fields = ( ('Author', 'author'), ('Author-email', 'author_email'), ('Maintainer', 'maintainer'), ('Maintainer-email', 'maintainer_email'), ) for field, attr in optional_fields: attr_val = getattr(self, attr) if six.PY2: attr_val = self._encode_field(attr_val) if attr_val is not None: file.write('%s: %s\n' % (field, attr_val)) file.write('License: %s\n' % self.get_license()) if self.download_url: file.write('Download-URL: %s\n' % self.download_url) for project_url in self.project_urls.items(): file.write('Project-URL: %s, %s\n' % project_url) long_desc = rfc822_escape(self.get_long_description()) file.write('Description: %s\n' % long_desc) keywords = ','.join(self.get_keywords()) if keywords: file.write('Keywords: %s\n' % keywords) if version >= StrictVersion('1.2'): for platform in self.get_platforms(): file.write('Platform: %s\n' % platform) else: self._write_list(file, 'Platform', self.get_platforms()) self._write_list(file, 'Classifier', self.get_classifiers()) # PEP 314 self._write_list(file, 'Requires', self.get_requires()) self._write_list(file, 'Provides', self.get_provides()) self._write_list(file, 'Obsoletes', self.get_obsoletes()) # Setuptools specific for PEP 345 if hasattr(self, 'python_requires'): file.write('Requires-Python: %s\n' % self.python_requires) # PEP 566 if self.long_description_content_type: file.write( 'Description-Content-Type: %s\n' % self.long_description_content_type ) if self.provides_extras: for extra in self.provides_extras: file.write('Provides-Extra: %s\n' % extra) sequence = tuple, list def check_importable(dist, attr, value): try: ep = pkg_resources.EntryPoint.parse('x=' + value) assert not ep.extras except (TypeError, ValueError, AttributeError, AssertionError): raise DistutilsSetupError( "%r must be importable 'module:attrs' string (got %r)" % (attr, value) ) def assert_string_list(dist, attr, value): """Verify that value is a string list or None""" try: assert ''.join(value) != value except (TypeError, ValueError, AttributeError, AssertionError): raise DistutilsSetupError( "%r must be a list of strings (got %r)" % (attr, value) ) def check_nsp(dist, attr, value): """Verify that namespace packages are valid""" ns_packages = value assert_string_list(dist, attr, ns_packages) for nsp in ns_packages: if not dist.has_contents_for(nsp): raise DistutilsSetupError( "Distribution contains no modules or packages for " + "namespace package %r" % nsp ) parent, sep, child = nsp.rpartition('.') if parent and parent not in ns_packages: distutils.log.warn( "WARNING: %r is declared as a package namespace, but %r" " is not: please correct this in setup.py", nsp, parent ) def check_extras(dist, attr, value): """Verify that extras_require mapping is valid""" try: list(itertools.starmap(_check_extra, value.items())) except (TypeError, ValueError, AttributeError): raise DistutilsSetupError( "'extras_require' must be a dictionary whose values are " "strings or lists of strings containing valid project/version " "requirement specifiers." ) def _check_extra(extra, reqs): name, sep, marker = extra.partition(':') if marker and pkg_resources.invalid_marker(marker): raise DistutilsSetupError("Invalid environment marker: " + marker) list(pkg_resources.parse_requirements(reqs)) def assert_bool(dist, attr, value): """Verify that value is True, False, 0, or 1""" if bool(value) != value: tmpl = "{attr!r} must be a boolean value (got {value!r})" raise DistutilsSetupError(tmpl.format(attr=attr, value=value)) def check_requirements(dist, attr, value): """Verify that install_requires is a valid requirements list""" try: list(pkg_resources.parse_requirements(value)) if isinstance(value, (dict, set)): raise TypeError("Unordered types are not allowed") except (TypeError, ValueError) as error: tmpl = ( "{attr!r} must be a string or list of strings " "containing valid project/version requirement specifiers; {error}" ) raise DistutilsSetupError(tmpl.format(attr=attr, error=error)) def check_specifier(dist, attr, value): """Verify that value is a valid version specifier""" try: packaging.specifiers.SpecifierSet(value) except packaging.specifiers.InvalidSpecifier as error: tmpl = ( "{attr!r} must be a string " "containing valid version specifiers; {error}" ) raise DistutilsSetupError(tmpl.format(attr=attr, error=error)) def check_entry_points(dist, attr, value): """Verify that entry_points map is parseable""" try: pkg_resources.EntryPoint.parse_map(value) except ValueError as e: raise DistutilsSetupError(e) def check_test_suite(dist, attr, value): if not isinstance(value, six.string_types): raise DistutilsSetupError("test_suite must be a string") def check_package_data(dist, attr, value): """Verify that value is a dictionary of package names to glob lists""" if isinstance(value, dict): for k, v in value.items(): if not isinstance(k, str): break try: iter(v) except TypeError: break else: return raise DistutilsSetupError( attr + " must be a dictionary mapping package names to lists of " "wildcard patterns" ) def check_packages(dist, attr, value): for pkgname in value: if not re.match(r'\w+(\.\w+)*', pkgname): distutils.log.warn( "WARNING: %r not a valid package name; please use only " ".-separated package names in setup.py", pkgname ) _Distribution = get_unpatched(distutils.core.Distribution) class Distribution(Distribution_parse_config_files, _Distribution): """Distribution with support for features, tests, and package data This is an enhanced version of 'distutils.dist.Distribution' that effectively adds the following new optional keyword arguments to 'setup()': 'install_requires' -- a string or sequence of strings specifying project versions that the distribution requires when installed, in the format used by 'pkg_resources.require()'. They will be installed automatically when the package is installed. If you wish to use packages that are not available in PyPI, or want to give your users an alternate download location, you can add a 'find_links' option to the '[easy_install]' section of your project's 'setup.cfg' file, and then setuptools will scan the listed web pages for links that satisfy the requirements. 'extras_require' -- a dictionary mapping names of optional "extras" to the additional requirement(s) that using those extras incurs. For example, this:: extras_require = dict(reST = ["docutils>=0.3", "reSTedit"]) indicates that the distribution can optionally provide an extra capability called "reST", but it can only be used if docutils and reSTedit are installed. If the user installs your package using EasyInstall and requests one of your extras, the corresponding additional requirements will be installed if needed. 'features' **deprecated** -- a dictionary mapping option names to 'setuptools.Feature' objects. Features are a portion of the distribution that can be included or excluded based on user options, inter-feature dependencies, and availability on the current system. Excluded features are omitted from all setup commands, including source and binary distributions, so you can create multiple distributions from the same source tree. Feature names should be valid Python identifiers, except that they may contain the '-' (minus) sign. Features can be included or excluded via the command line options '--with-X' and '--without-X', where 'X' is the name of the feature. Whether a feature is included by default, and whether you are allowed to control this from the command line, is determined by the Feature object. See the 'Feature' class for more information. 'test_suite' -- the name of a test suite to run for the 'test' command. If the user runs 'python setup.py test', the package will be installed, and the named test suite will be run. The format is the same as would be used on a 'unittest.py' command line. That is, it is the dotted name of an object to import and call to generate a test suite. 'package_data' -- a dictionary mapping package names to lists of filenames or globs to use to find data files contained in the named packages. If the dictionary has filenames or globs listed under '""' (the empty string), those names will be searched for in every package, in addition to any names for the specific package. Data files found using these names/globs will be installed along with the package, in the same location as the package. Note that globs are allowed to reference the contents of non-package subdirectories, as long as you use '/' as a path separator. (Globs are automatically converted to platform-specific paths at runtime.) In addition to these new keywords, this class also has several new methods for manipulating the distribution's contents. For example, the 'include()' and 'exclude()' methods can be thought of as in-place add and subtract commands that add or remove packages, modules, extensions, and so on from the distribution. They are used by the feature subsystem to configure the distribution for the included and excluded features. """ _DISTUTILS_UNSUPPORTED_METADATA = { 'long_description_content_type': None, 'project_urls': dict, 'provides_extras': set, } _patched_dist = None def patch_missing_pkg_info(self, attrs): # Fake up a replacement for the data that would normally come from # PKG-INFO, but which might not yet be built if this is a fresh # checkout. # if not attrs or 'name' not in attrs or 'version' not in attrs: return key = pkg_resources.safe_name(str(attrs['name'])).lower() dist = pkg_resources.working_set.by_key.get(key) if dist is not None and not dist.has_metadata('PKG-INFO'): dist._version = pkg_resources.safe_version(str(attrs['version'])) self._patched_dist = dist def __init__(self, attrs=None): have_package_data = hasattr(self, "package_data") if not have_package_data: self.package_data = {} attrs = attrs or {} if 'features' in attrs or 'require_features' in attrs: Feature.warn_deprecated() self.require_features = [] self.features = {} self.dist_files = [] # Filter-out setuptools' specific options. self.src_root = attrs.pop("src_root", None) self.patch_missing_pkg_info(attrs) self.dependency_links = attrs.pop('dependency_links', []) self.setup_requires = attrs.pop('setup_requires', []) for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'): vars(self).setdefault(ep.name, None) _Distribution.__init__(self, { k: v for k, v in attrs.items() if k not in self._DISTUTILS_UNSUPPORTED_METADATA }) # Fill-in missing metadata fields not supported by distutils. # Note some fields may have been set by other tools (e.g. pbr) # above; they are taken preferrentially to setup() arguments for option, default in self._DISTUTILS_UNSUPPORTED_METADATA.items(): for source in self.metadata.__dict__, attrs: if option in source: value = source[option] break else: value = default() if default else None setattr(self.metadata, option, value) if isinstance(self.metadata.version, numbers.Number): # Some people apparently take "version number" too literally :) self.metadata.version = str(self.metadata.version) if self.metadata.version is not None: try: ver = packaging.version.Version(self.metadata.version) normalized_version = str(ver) if self.metadata.version != normalized_version: warnings.warn( "Normalizing '%s' to '%s'" % ( self.metadata.version, normalized_version, ) ) self.metadata.version = normalized_version except (packaging.version.InvalidVersion, TypeError): warnings.warn( "The version specified (%r) is an invalid version, this " "may not work as expected with newer versions of " "setuptools, pip, and PyPI. Please see PEP 440 for more " "details." % self.metadata.version ) self._finalize_requires() def _finalize_requires(self): """ Set `metadata.python_requires` and fix environment markers in `install_requires` and `extras_require`. """ if getattr(self, 'python_requires', None): self.metadata.python_requires = self.python_requires if getattr(self, 'extras_require', None): for extra in self.extras_require.keys(): # Since this gets called multiple times at points where the # keys have become 'converted' extras, ensure that we are only # truly adding extras we haven't seen before here. extra = extra.split(':')[0] if extra: self.metadata.provides_extras.add(extra) self._convert_extras_requirements() self._move_install_requirements_markers() def _convert_extras_requirements(self): """ Convert requirements in `extras_require` of the form `"extra": ["barbazquux; {marker}"]` to `"extra:{marker}": ["barbazquux"]`. """ spec_ext_reqs = getattr(self, 'extras_require', None) or {} self._tmp_extras_require = defaultdict(list) for section, v in spec_ext_reqs.items(): # Do not strip empty sections. self._tmp_extras_require[section] for r in pkg_resources.parse_requirements(v): suffix = self._suffix_for(r) self._tmp_extras_require[section + suffix].append(r) @staticmethod def _suffix_for(req): """ For a requirement, return the 'extras_require' suffix for that requirement. """ return ':' + str(req.marker) if req.marker else '' def _move_install_requirements_markers(self): """ Move requirements in `install_requires` that are using environment markers `extras_require`. """ # divide the install_requires into two sets, simple ones still # handled by install_requires and more complex ones handled # by extras_require. def is_simple_req(req): return not req.marker spec_inst_reqs = getattr(self, 'install_requires', None) or () inst_reqs = list(pkg_resources.parse_requirements(spec_inst_reqs)) simple_reqs = filter(is_simple_req, inst_reqs) complex_reqs = filterfalse(is_simple_req, inst_reqs) self.install_requires = list(map(str, simple_reqs)) for r in complex_reqs: self._tmp_extras_require[':' + str(r.marker)].append(r) self.extras_require = dict( (k, [str(r) for r in map(self._clean_req, v)]) for k, v in self._tmp_extras_require.items() ) def _clean_req(self, req): """ Given a Requirement, remove environment markers and return it. """ req.marker = None return req def parse_config_files(self, filenames=None, ignore_option_errors=False): """Parses configuration files from various levels and loads configuration. """ _Distribution.parse_config_files(self, filenames=filenames) parse_configuration(self, self.command_options, ignore_option_errors=ignore_option_errors) self._finalize_requires() def parse_command_line(self): """Process features after parsing command line options""" result = _Distribution.parse_command_line(self) if self.features: self._finalize_features() return result def _feature_attrname(self, name): """Convert feature name to corresponding option attribute name""" return 'with_' + name.replace('-', '_') def fetch_build_eggs(self, requires): """Resolve pre-setup requirements""" resolved_dists = pkg_resources.working_set.resolve( pkg_resources.parse_requirements(requires), installer=self.fetch_build_egg, replace_conflicting=True, ) for dist in resolved_dists: pkg_resources.working_set.add(dist, replace=True) return resolved_dists def finalize_options(self): _Distribution.finalize_options(self) if self.features: self._set_global_opts_from_features() for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'): value = getattr(self, ep.name, None) if value is not None: ep.require(installer=self.fetch_build_egg) ep.load()(self, ep.name, value) if getattr(self, 'convert_2to3_doctests', None): # XXX may convert to set here when we can rely on set being builtin self.convert_2to3_doctests = [ os.path.abspath(p) for p in self.convert_2to3_doctests ] else: self.convert_2to3_doctests = [] def get_egg_cache_dir(self): egg_cache_dir = os.path.join(os.curdir, '.eggs') if not os.path.exists(egg_cache_dir): os.mkdir(egg_cache_dir) windows_support.hide_file(egg_cache_dir) readme_txt_filename = os.path.join(egg_cache_dir, 'README.txt') with open(readme_txt_filename, 'w') as f: f.write('This directory contains eggs that were downloaded ' 'by setuptools to build, test, and run plug-ins.\n\n') f.write('This directory caches those eggs to prevent ' 'repeated downloads.\n\n') f.write('However, it is safe to delete this directory.\n\n') return egg_cache_dir def fetch_build_egg(self, req): """Fetch an egg needed for building""" from setuptools.command.easy_install import easy_install dist = self.__class__({'script_args': ['easy_install']}) opts = dist.get_option_dict('easy_install') opts.clear() opts.update( (k, v) for k, v in self.get_option_dict('easy_install').items() if k in ( # don't use any other settings 'find_links', 'site_dirs', 'index_url', 'optimize', 'site_dirs', 'allow_hosts', )) if self.dependency_links: links = self.dependency_links[:] if 'find_links' in opts: links = opts['find_links'][1] + links opts['find_links'] = ('setup', links) install_dir = self.get_egg_cache_dir() cmd = easy_install( dist, args=["x"], install_dir=install_dir, exclude_scripts=True, always_copy=False, build_directory=None, editable=False, upgrade=False, multi_version=True, no_report=True, user=False ) cmd.ensure_finalized() return cmd.easy_install(req) def _set_global_opts_from_features(self): """Add --with-X/--without-X options based on optional features""" go = [] no = self.negative_opt.copy() for name, feature in self.features.items(): self._set_feature(name, None) feature.validate(self) if feature.optional: descr = feature.description incdef = ' (default)' excdef = '' if not feature.include_by_default(): excdef, incdef = incdef, excdef new = ( ('with-' + name, None, 'include ' + descr + incdef), ('without-' + name, None, 'exclude ' + descr + excdef), ) go.extend(new) no['without-' + name] = 'with-' + name self.global_options = self.feature_options = go + self.global_options self.negative_opt = self.feature_negopt = no def _finalize_features(self): """Add/remove features and resolve dependencies between them""" # First, flag all the enabled items (and thus their dependencies) for name, feature in self.features.items(): enabled = self.feature_is_included(name) if enabled or (enabled is None and feature.include_by_default()): feature.include_in(self) self._set_feature(name, 1) # Then disable the rest, so that off-by-default features don't # get flagged as errors when they're required by an enabled feature for name, feature in self.features.items(): if not self.feature_is_included(name): feature.exclude_from(self) self._set_feature(name, 0) def get_command_class(self, command): """Pluggable version of get_command_class()""" if command in self.cmdclass: return self.cmdclass[command] eps = pkg_resources.iter_entry_points('distutils.commands', command) for ep in eps: ep.require(installer=self.fetch_build_egg) self.cmdclass[command] = cmdclass = ep.load() return cmdclass else: return _Distribution.get_command_class(self, command) def print_commands(self): for ep in pkg_resources.iter_entry_points('distutils.commands'): if ep.name not in self.cmdclass: # don't require extras as the commands won't be invoked cmdclass = ep.resolve() self.cmdclass[ep.name] = cmdclass return _Distribution.print_commands(self) def get_command_list(self): for ep in pkg_resources.iter_entry_points('distutils.commands'): if ep.name not in self.cmdclass: # don't require extras as the commands won't be invoked cmdclass = ep.resolve() self.cmdclass[ep.name] = cmdclass return _Distribution.get_command_list(self) def _set_feature(self, name, status): """Set feature's inclusion status""" setattr(self, self._feature_attrname(name), status) def feature_is_included(self, name): """Return 1 if feature is included, 0 if excluded, 'None' if unknown""" return getattr(self, self._feature_attrname(name)) def include_feature(self, name): """Request inclusion of feature named 'name'""" if self.feature_is_included(name) == 0: descr = self.features[name].description raise DistutilsOptionError( descr + " is required, but was excluded or is not available" ) self.features[name].include_in(self) self._set_feature(name, 1) def include(self, **attrs): """Add items to distribution that are named in keyword arguments For example, 'dist.exclude(py_modules=["x"])' would add 'x' to the distribution's 'py_modules' attribute, if it was not already there. Currently, this method only supports inclusion for attributes that are lists or tuples. If you need to add support for adding to other attributes in this or a subclass, you can add an '_include_X' method, where 'X' is the name of the attribute. The method will be called with the value passed to 'include()'. So, 'dist.include(foo={"bar":"baz"})' will try to call 'dist._include_foo({"bar":"baz"})', which can then handle whatever special inclusion logic is needed. """ for k, v in attrs.items(): include = getattr(self, '_include_' + k, None) if include: include(v) else: self._include_misc(k, v) def exclude_package(self, package): """Remove packages, modules, and extensions in named package""" pfx = package + '.' if self.packages: self.packages = [ p for p in self.packages if p != package and not p.startswith(pfx) ] if self.py_modules: self.py_modules = [ p for p in self.py_modules if p != package and not p.startswith(pfx) ] if self.ext_modules: self.ext_modules = [ p for p in self.ext_modules if p.name != package and not p.name.startswith(pfx) ] def has_contents_for(self, package): """Return true if 'exclude_package(package)' would do something""" pfx = package + '.' for p in self.iter_distribution_names(): if p == package or p.startswith(pfx): return True def _exclude_misc(self, name, value): """Handle 'exclude()' for list/tuple attrs without a special handler""" if not isinstance(value, sequence): raise DistutilsSetupError( "%s: setting must be a list or tuple (%r)" % (name, value) ) try: old = getattr(self, name) except AttributeError: raise DistutilsSetupError( "%s: No such distribution setting" % name ) if old is not None and not isinstance(old, sequence): raise DistutilsSetupError( name + ": this setting cannot be changed via include/exclude" ) elif old: setattr(self, name, [item for item in old if item not in value]) def _include_misc(self, name, value): """Handle 'include()' for list/tuple attrs without a special handler""" if not isinstance(value, sequence): raise DistutilsSetupError( "%s: setting must be a list (%r)" % (name, value) ) try: old = getattr(self, name) except AttributeError: raise DistutilsSetupError( "%s: No such distribution setting" % name ) if old is None: setattr(self, name, value) elif not isinstance(old, sequence): raise DistutilsSetupError( name + ": this setting cannot be changed via include/exclude" ) else: new = [item for item in value if item not in old] setattr(self, name, old + new) def exclude(self, **attrs): """Remove items from distribution that are named in keyword arguments For example, 'dist.exclude(py_modules=["x"])' would remove 'x' from the distribution's 'py_modules' attribute. Excluding packages uses the 'exclude_package()' method, so all of the package's contained packages, modules, and extensions are also excluded. Currently, this method only supports exclusion from attributes that are lists or tuples. If you need to add support for excluding from other attributes in this or a subclass, you can add an '_exclude_X' method, where 'X' is the name of the attribute. The method will be called with the value passed to 'exclude()'. So, 'dist.exclude(foo={"bar":"baz"})' will try to call 'dist._exclude_foo({"bar":"baz"})', which can then handle whatever special exclusion logic is needed. """ for k, v in attrs.items(): exclude = getattr(self, '_exclude_' + k, None) if exclude: exclude(v) else: self._exclude_misc(k, v) def _exclude_packages(self, packages): if not isinstance(packages, sequence): raise DistutilsSetupError( "packages: setting must be a list or tuple (%r)" % (packages,) ) list(map(self.exclude_package, packages)) def _parse_command_opts(self, parser, args): # Remove --with-X/--without-X options when processing command args self.global_options = self.__class__.global_options self.negative_opt = self.__class__.negative_opt # First, expand any aliases command = args[0] aliases = self.get_option_dict('aliases') while command in aliases: src, alias = aliases[command] del aliases[command] # ensure each alias can expand only once! import shlex args[:1] = shlex.split(alias, True) command = args[0] nargs = _Distribution._parse_command_opts(self, parser, args) # Handle commands that want to consume all remaining arguments cmd_class = self.get_command_class(command) if getattr(cmd_class, 'command_consumes_arguments', None): self.get_option_dict(command)['args'] = ("command line", nargs) if nargs is not None: return [] return nargs def get_cmdline_options(self): """Return a '{cmd: {opt:val}}' map of all command-line options Option names are all long, but do not include the leading '--', and contain dashes rather than underscores. If the option doesn't take an argument (e.g. '--quiet'), the 'val' is 'None'. Note that options provided by config files are intentionally excluded. """ d = {} for cmd, opts in self.command_options.items(): for opt, (src, val) in opts.items(): if src != "command line": continue opt = opt.replace('_', '-') if val == 0: cmdobj = self.get_command_obj(cmd) neg_opt = self.negative_opt.copy() neg_opt.update(getattr(cmdobj, 'negative_opt', {})) for neg, pos in neg_opt.items(): if pos == opt: opt = neg val = None break else: raise AssertionError("Shouldn't be able to get here") elif val == 1: val = None d.setdefault(cmd, {})[opt] = val return d def iter_distribution_names(self): """Yield all packages, modules, and extension names in distribution""" for pkg in self.packages or (): yield pkg for module in self.py_modules or (): yield module for ext in self.ext_modules or (): if isinstance(ext, tuple): name, buildinfo = ext else: name = ext.name if name.endswith('module'): name = name[:-6] yield name def handle_display_options(self, option_order): """If there were any non-global "display-only" options (--help-commands or the metadata display options) on the command line, display the requested info and return true; else return false. """ import sys if six.PY2 or self.help_commands: return _Distribution.handle_display_options(self, option_order) # Stdout may be StringIO (e.g. in tests) import io if not isinstance(sys.stdout, io.TextIOWrapper): return _Distribution.handle_display_options(self, option_order) # Don't wrap stdout if utf-8 is already the encoding. Provides # workaround for #334. if sys.stdout.encoding.lower() in ('utf-8', 'utf8'): return _Distribution.handle_display_options(self, option_order) # Print metadata in UTF-8 no matter the platform encoding = sys.stdout.encoding errors = sys.stdout.errors newline = sys.platform != 'win32' and '\n' or None line_buffering = sys.stdout.line_buffering sys.stdout = io.TextIOWrapper( sys.stdout.detach(), 'utf-8', errors, newline, line_buffering) try: return _Distribution.handle_display_options(self, option_order) finally: sys.stdout = io.TextIOWrapper( sys.stdout.detach(), encoding, errors, newline, line_buffering) class Feature: """ **deprecated** -- The `Feature` facility was never completely implemented or supported, `has reported issues <https://github.com/pypa/setuptools/issues/58>`_ and will be removed in a future version. A subset of the distribution that can be excluded if unneeded/wanted Features are created using these keyword arguments: 'description' -- a short, human readable description of the feature, to be used in error messages, and option help messages. 'standard' -- if true, the feature is included by default if it is available on the current system. Otherwise, the feature is only included if requested via a command line '--with-X' option, or if another included feature requires it. The default setting is 'False'. 'available' -- if true, the feature is available for installation on the current system. The default setting is 'True'. 'optional' -- if true, the feature's inclusion can be controlled from the command line, using the '--with-X' or '--without-X' options. If false, the feature's inclusion status is determined automatically, based on 'availabile', 'standard', and whether any other feature requires it. The default setting is 'True'. 'require_features' -- a string or sequence of strings naming features that should also be included if this feature is included. Defaults to empty list. May also contain 'Require' objects that should be added/removed from the distribution. 'remove' -- a string or list of strings naming packages to be removed from the distribution if this feature is *not* included. If the feature *is* included, this argument is ignored. This argument exists to support removing features that "crosscut" a distribution, such as defining a 'tests' feature that removes all the 'tests' subpackages provided by other features. The default for this argument is an empty list. (Note: the named package(s) or modules must exist in the base distribution when the 'setup()' function is initially called.) other keywords -- any other keyword arguments are saved, and passed to the distribution's 'include()' and 'exclude()' methods when the feature is included or excluded, respectively. So, for example, you could pass 'packages=["a","b"]' to cause packages 'a' and 'b' to be added or removed from the distribution as appropriate. A feature must include at least one 'requires', 'remove', or other keyword argument. Otherwise, it can't affect the distribution in any way. Note also that you can subclass 'Feature' to create your own specialized feature types that modify the distribution in other ways when included or excluded. See the docstrings for the various methods here for more detail. Aside from the methods, the only feature attributes that distributions look at are 'description' and 'optional'. """ @staticmethod def warn_deprecated(): msg = ( "Features are deprecated and will be removed in a future " "version. See https://github.com/pypa/setuptools/issues/65." ) warnings.warn(msg, DeprecationWarning, stacklevel=3) def __init__( self, description, standard=False, available=True, optional=True, require_features=(), remove=(), **extras): self.warn_deprecated() self.description = description self.standard = standard self.available = available self.optional = optional if isinstance(require_features, (str, Require)): require_features = require_features, self.require_features = [ r for r in require_features if isinstance(r, str) ] er = [r for r in require_features if not isinstance(r, str)] if er: extras['require_features'] = er if isinstance(remove, str): remove = remove, self.remove = remove self.extras = extras if not remove and not require_features and not extras: raise DistutilsSetupError( "Feature %s: must define 'require_features', 'remove', or " "at least one of 'packages', 'py_modules', etc." ) def include_by_default(self): """Should this feature be included by default?""" return self.available and self.standard def include_in(self, dist): """Ensure feature and its requirements are included in distribution You may override this in a subclass to perform additional operations on the distribution. Note that this method may be called more than once per feature, and so should be idempotent. """ if not self.available: raise DistutilsPlatformError( self.description + " is required, " "but is not available on this platform" ) dist.include(**self.extras) for f in self.require_features: dist.include_feature(f) def exclude_from(self, dist): """Ensure feature is excluded from distribution You may override this in a subclass to perform additional operations on the distribution. This method will be called at most once per feature, and only after all included features have been asked to include themselves. """ dist.exclude(**self.extras) if self.remove: for item in self.remove: dist.exclude_package(item) def validate(self, dist): """Verify that feature makes sense in context of distribution This method is called by the distribution just before it parses its command line. It checks to ensure that the 'remove' attribute, if any, contains only valid package/module names that are present in the base distribution when 'setup()' is called. You may override it in a subclass to perform any other required validation of the feature against a target distribution. """ for item in self.remove: if not dist.has_contents_for(item): raise DistutilsSetupError( "%s wants to be able to remove %s, but the distribution" " doesn't contain any packages or modules under %s" % (self.description, item, item) )
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