Python req_install.InstallRequirement方法代码示例

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def body(self):
        # Dodge circular import.
        from pip._internal.utils.hashes import FAVORITE_HASH

        package = None
        if self.req:
            # In the case of URL-based requirements, display the original URL
            # seen in the requirements file rather than the package name,
            # so the output can be directly copied into the requirements file.
            package = (self.req.original_link if self.req.original_link
                       # In case someone feeds something downright stupid
                       # to InstallRequirement's constructor.
                       else getattr(self.req, 'req', None))
        return '    %s --hash=%s:%s' % (package or 'unknown package',
                                        FAVORITE_HASH,
                                        self.gotten_hash) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def prepare_installed_requirement(self, req, require_hashes, skip_reason):
        # type: (InstallRequirement, bool, Optional[str]) -> DistAbstraction
        """Prepare an already-installed requirement
        """
        assert req.satisfied_by, "req should have been satisfied but isn't"
        assert skip_reason is not None, (
            "did not get skip reason skipped but req.satisfied_by "
            "is set to %r" % (req.satisfied_by,)
        )
        logger.info(
            'Requirement %s: %s (%s)',
            skip_reason, req, req.satisfied_by.version
        )
        with indent_log():
            if require_hashes:
                logger.debug(
                    'Since it is already installed, we are trusting this '
                    'package without checking its hash. To ensure a '
                    'completely repeatable environment, install into an '
                    'empty virtualenv.'
                )
            abstract_dist = Installed(req)

        return abstract_dist 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def check_install_conflicts(to_install):
    # type: (List[InstallRequirement]) -> Tuple[PackageSet, CheckResult]
    """For checking if the dependency graph would be consistent after \
    installing given requirements
    """
    # Start from the current state
    package_set, _ = create_package_set_from_installed()
    # Install packages
    would_be_installed = _simulate_installation_of(to_install, package_set)

    # Only warn about directly-dependent packages; create a whitelist of them
    whitelist = _create_whitelist(would_be_installed, package_set)

    return (
        package_set,
        check_package_set(
            package_set, should_ignore=lambda name: name not in whitelist
        )
    ) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def add(self, req):
        # type: (InstallRequirement) -> None
        link = req.link
        info = str(req)
        entry_path = self._entry_path(link)
        try:
            with open(entry_path) as fp:
                # Error, these's already a build in progress.
                raise LookupError('%s is already being built: %s'
                                  % (link, fp.read()))
        except IOError as e:
            if e.errno != errno.ENOENT:
                raise
            assert req not in self._entries
            with open(entry_path, 'w') as fp:
                fp.write(info)
            self._entries.add(req)
            logger.debug('Added %s to build tracker %r', req, self._root) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def _simulate_installation_of(to_install, package_set):
    # type: (List[InstallRequirement], PackageSet) -> Set[str]
    """Computes the version of packages after installing to_install.
    """

    # Keep track of packages that were installed
    installed = set()

    # Modify it as installing requirement_set would (assuming no errors)
    for inst_req in to_install:
        dist = make_abstract_dist(inst_req).dist()
        name = canonicalize_name(dist.key)
        package_set[name] = PackageDetails(dist.version, dist.requires())

        installed.add(name)

    return installed 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def _build_one(
        self,
        req,  # type: InstallRequirement
        output_dir,  # type: str
    ):
        # type: (...) -> Optional[str]
        """Build one wheel.

        :return: The filename of the built wheel, or None if the build failed.
        """
        try:
            ensure_dir(output_dir)
        except OSError as e:
            logger.warning(
                "Building wheel for %s failed: %s",
                req.name, e,
            )
            return None

        # Install build deps into temporary directory (PEP 518)
        with req.build_env:
            return self._build_one_inside_env(req, output_dir) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def check_install_conflicts(to_install):
    # type: (List[InstallRequirement]) -> Tuple[PackageSet, CheckResult]
    """For checking if the dependency graph would be consistent after \
    installing given requirements
    """
    # Start from the current state
    state = create_package_set_from_installed()
    _simulate_installation_of(to_install, state)
    return state, check_package_set(state)


# NOTE from @pradyunsg
# This required a minor update in dependency link handling logic over at
# operations.prepare.IsSDist.dist() to get it working 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def _simulate_installation_of(to_install, state):
    # type: (List[InstallRequirement], PackageSet) -> None
    """Computes the version of packages after installing to_install.
    """

    # Modify it as installing requirement_set would (assuming no errors)
    for inst_req in to_install:
        dist = make_abstract_dist(inst_req).dist(finder=None)
        name = canonicalize_name(dist.key)
        state[name] = PackageDetails(dist.version, dist.requires()) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def get_legacy_build_wheel_path(
    names,  # type: List[str]
    temp_dir,  # type: str
    req,  # type: InstallRequirement
    command_args,  # type: List[str]
    command_output,  # type: str
):
    # type: (...) -> Optional[str]
    """
    Return the path to the wheel in the temporary build directory.
    """
    # Sort for determinism.
    names = sorted(names)
    if not names:
        msg = (
            'Legacy build of wheel for {!r} created no files.\n'
        ).format(req.name)
        msg += format_command_result(command_args, command_output)
        logger.warning(msg)
        return None

    if len(names) > 1:
        msg = (
            'Legacy build of wheel for {!r} created more than one file.\n'
            'Filenames (choosing first): {}\n'
        ).format(req.name, names)
        msg += format_command_result(command_args, command_output)
        logger.warning(msg)

    return os.path.join(temp_dir, names[0]) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def _build_one_pep517(self, req, tempd, python_tag=None):
        """Build one InstallRequirement using the PEP 517 build process.

        Returns path to wheel if successfully built. Otherwise, returns None.
        """
        assert req.metadata_directory is not None
        if self.build_options:
            # PEP 517 does not support --build-options
            logger.error('Cannot build wheel for %s using PEP 517 when '
                         '--build-options is present' % (req.name,))
            return None
        try:
            req.spin_message = 'Building wheel for %s (PEP 517)' % (req.name,)
            logger.debug('Destination directory: %s', tempd)
            wheel_name = req.pep517_backend.build_wheel(
                tempd,
                metadata_directory=req.metadata_directory
            )
            if python_tag:
                # General PEP 517 backends don't necessarily support
                # a "--python-tag" option, so we rename the wheel
                # file directly.
                new_name = replace_python_tag(wheel_name, python_tag)
                os.rename(
                    os.path.join(tempd, wheel_name),
                    os.path.join(tempd, new_name)
                )
                # Reassign to simplify the return at the end of function
                wheel_name = new_name
        except Exception:
            logger.error('Failed building wheel for %s', req.name)
            return None
        return os.path.join(tempd, wheel_name) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def make_abstract_dist(req):
    # type: (InstallRequirement) -> DistAbstraction
    """Factory to make an abstract dist object.

    Preconditions: Either an editable req with a source_dir, or satisfied_by or
    a wheel link, or a non-editable req with a source_dir.

    :return: A concrete DistAbstraction.
    """
    if req.editable:
        return IsSDist(req)
    elif req.link and req.link.is_wheel:
        return IsWheel(req)
    else:
        return IsSDist(req) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def __init__(self, req):
        # type: (InstallRequirement) -> None
        self.req = req  # type: InstallRequirement 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def prepare_editable_requirement(
        self,
        req,  # type: InstallRequirement
        require_hashes,  # type: bool
        use_user_site,  # type: bool
        finder  # type: PackageFinder
    ):
        # type: (...) -> DistAbstraction
        """Prepare an editable requirement
        """
        assert req.editable, "cannot prepare a non-editable req as editable"

        logger.info('Obtaining %s', req)

        with indent_log():
            if require_hashes:
                raise InstallationError(
                    'The editable requirement %s cannot be installed when '
                    'requiring hashes, because there is no single file to '
                    'hash.' % req
                )
            req.ensure_has_source_dir(self.src_dir)
            req.update_editable(not self._download_should_save)

            abstract_dist = make_abstract_dist(req)
            with self.req_tracker.track(req):
                abstract_dist.prep_for_dist(finder, self.build_isolation)

            if self._download_should_save:
                req.archive(self.download_dir)
            req.check_if_exists(use_user_site)

        return abstract_dist 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def install_req_from_editable(
    editable_req,  # type: str
    comes_from=None,  # type: Optional[str]
    use_pep517=None,  # type: Optional[bool]
    isolated=False,  # type: bool
    options=None,  # type: Optional[Dict[str, Any]]
    wheel_cache=None,  # type: Optional[WheelCache]
    constraint=False  # type: bool
):
    # type: (...) -> InstallRequirement
    name, url, extras_override = parse_editable(editable_req)
    if url.startswith('file:'):
        source_dir = url_to_path(url)
    else:
        source_dir = None

    if name is not None:
        try:
            req = Requirement(name)
        except InvalidRequirement:
            raise InstallationError("Invalid requirement: '%s'" % name)
    else:
        req = None
    return InstallRequirement(
        req, comes_from, source_dir=source_dir,
        editable=True,
        link=Link(url),
        constraint=constraint,
        use_pep517=use_pep517,
        isolated=isolated,
        options=options if options else {},
        wheel_cache=wheel_cache,
        extras=extras_override or (),
    ) 

# 需要导入模块: from pip._internal.req import req_install [as 别名]
# 或者: from pip._internal.req.req_install import InstallRequirement [as 别名]
def install_req_from_req_string(
    req_string,  # type: str
    comes_from=None,  # type: Optional[InstallRequirement]
    isolated=False,  # type: bool
    wheel_cache=None,  # type: Optional[WheelCache]
    use_pep517=None  # type: Optional[bool]
):
    # type: (...) -> InstallRequirement
    try:
        req = Requirement(req_string)
    except InvalidRequirement:
        raise InstallationError("Invalid requirement: '%s'" % req_string)

    domains_not_allowed = [
        PyPI.file_storage_domain,
        TestPyPI.file_storage_domain,
    ]
    if (req.url and comes_from and comes_from.link and
            comes_from.link.netloc in domains_not_allowed):
        # Explicitly disallow pypi packages that depend on external urls
        raise InstallationError(
            "Packages installed from PyPI cannot depend on packages "
            "which are not also hosted on PyPI.\n"
            "%s depends on %s " % (comes_from.name, req)
        )

    return InstallRequirement(
        req, comes_from, isolated=isolated, wheel_cache=wheel_cache,
        use_pep517=use_pep517
    )