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234 lines
8.1 KiB
234 lines
8.1 KiB
# Copyright 2015, 2016 OpenMarket Ltd
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# Copyright 2017 Vector Creations Ltd
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# Copyright 2018 New Vector Ltd
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# Copyright 2020 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from typing import List, Set
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from pkg_resources import (
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DistributionNotFound,
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Requirement,
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VersionConflict,
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get_provider,
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)
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logger = logging.getLogger(__name__)
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# REQUIREMENTS is a simple list of requirement specifiers[1], and must be
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# installed. It is passed to setup() as install_requires in setup.py.
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#
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# CONDITIONAL_REQUIREMENTS is the optional dependencies, represented as a dict
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# of lists. The dict key is the optional dependency name and can be passed to
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# pip when installing. The list is a series of requirement specifiers[1] to be
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# installed when that optional dependency requirement is specified. It is passed
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# to setup() as extras_require in setup.py
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#
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# Note that these both represent runtime dependencies (and the versions
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# installed are checked at runtime).
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#
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# Also note that we replicate these constraints in the Synapse Dockerfile while
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# pre-installing dependencies. If these constraints are updated here, the same
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# change should be made in the Dockerfile.
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#
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# [1] https://pip.pypa.io/en/stable/reference/pip_install/#requirement-specifiers.
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REQUIREMENTS = [
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"jsonschema>=2.5.1",
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"frozendict>=1",
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"unpaddedbase64>=1.1.0",
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"canonicaljson>=1.4.0",
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# we use the type definitions added in signedjson 1.1.
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"signedjson>=1.1.0",
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"pynacl>=1.2.1",
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"idna>=2.5",
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# validating SSL certs for IP addresses requires service_identity 18.1.
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"service_identity>=18.1.0",
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# Twisted 18.9 introduces some logger improvements that the structured
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# logger utilises
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"Twisted>=18.9.0",
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"treq>=15.1",
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# Twisted has required pyopenssl 16.0 since about Twisted 16.6.
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"pyopenssl>=16.0.0",
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"pyyaml>=3.11",
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"pyasn1>=0.1.9",
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"pyasn1-modules>=0.0.7",
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"bcrypt>=3.1.0",
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"pillow>=4.3.0",
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"sortedcontainers>=1.4.4",
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"pymacaroons>=0.13.0",
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"msgpack>=0.5.2",
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"phonenumbers>=8.2.0",
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# we use GaugeHistogramMetric, which was added in prom-client 0.4.0.
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"prometheus_client>=0.4.0",
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# we use attr.validators.deep_iterable, which arrived in 19.1.0 (Note:
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# Fedora 31 only has 19.1, so if we want to upgrade we should wait until 33
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# is out in November.)
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"attrs>=19.1.0",
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"netaddr>=0.7.18",
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"Jinja2>=2.9",
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"bleach>=1.4.3",
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"typing-extensions>=3.7.4",
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]
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CONDITIONAL_REQUIREMENTS = {
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"matrix-synapse-ldap3": ["matrix-synapse-ldap3>=0.1"],
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"postgres": [
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# we use execute_values with the fetch param, which arrived in psycopg 2.8.
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"psycopg2>=2.8 ; platform_python_implementation != 'PyPy'",
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"psycopg2cffi>=2.8 ; platform_python_implementation == 'PyPy'",
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"psycopg2cffi-compat==1.1 ; platform_python_implementation == 'PyPy'",
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],
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# ACME support is required to provision TLS certificates from authorities
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# that use the protocol, such as Let's Encrypt.
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"acme": [
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"txacme>=0.9.2",
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# txacme depends on eliot. Eliot 1.8.0 is incompatible with
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# python 3.5.2, as per https://github.com/itamarst/eliot/issues/418
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'eliot<1.8.0;python_version<"3.5.3"',
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],
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"saml2": [
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# pysaml2 6.4.0 is incompatible with Python 3.5 (see https://github.com/IdentityPython/pysaml2/issues/749)
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"pysaml2>=4.5.0,<6.4.0;python_version<'3.6'",
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"pysaml2>=4.5.0;python_version>='3.6'",
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],
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"oidc": ["authlib>=0.14.0"],
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# systemd-python is necessary for logging to the systemd journal via
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# `systemd.journal.JournalHandler`, as is documented in
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# `contrib/systemd/log_config.yaml`.
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"systemd": ["systemd-python>=231"],
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"url_preview": ["lxml>=3.5.0"],
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"sentry": ["sentry-sdk>=0.7.2"],
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"opentracing": ["jaeger-client>=4.0.0", "opentracing>=2.2.0"],
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"jwt": ["pyjwt>=1.6.4"],
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# hiredis is not a *strict* dependency, but it makes things much faster.
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# (if it is not installed, we fall back to slow code.)
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"redis": ["txredisapi>=1.4.7", "hiredis"],
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}
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ALL_OPTIONAL_REQUIREMENTS = set() # type: Set[str]
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for name, optional_deps in CONDITIONAL_REQUIREMENTS.items():
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# Exclude systemd as it's a system-based requirement.
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# Exclude lint as it's a dev-based requirement.
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if name not in ["systemd"]:
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ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
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def list_requirements():
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return list(set(REQUIREMENTS) | ALL_OPTIONAL_REQUIREMENTS)
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class DependencyException(Exception):
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@property
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def message(self):
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return "\n".join(
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[
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"Missing Requirements: %s" % (", ".join(self.dependencies),),
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"To install run:",
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" pip install --upgrade --force %s" % (" ".join(self.dependencies),),
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"",
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]
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)
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@property
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def dependencies(self):
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for i in self.args[0]:
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yield "'" + i + "'"
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def check_requirements(for_feature=None):
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deps_needed = []
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errors = []
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if for_feature:
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reqs = CONDITIONAL_REQUIREMENTS[for_feature]
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else:
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reqs = REQUIREMENTS
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for dependency in reqs:
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try:
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_check_requirement(dependency)
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except VersionConflict as e:
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deps_needed.append(dependency)
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errors.append(
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"Needed %s, got %s==%s"
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% (
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dependency,
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e.dist.project_name, # type: ignore[attr-defined] # noqa
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e.dist.version, # type: ignore[attr-defined] # noqa
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)
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)
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except DistributionNotFound:
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deps_needed.append(dependency)
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if for_feature:
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errors.append(
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"Needed %s for the '%s' feature but it was not installed"
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% (dependency, for_feature)
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)
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else:
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errors.append("Needed %s but it was not installed" % (dependency,))
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if not for_feature:
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# Check the optional dependencies are up to date. We allow them to not be
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# installed.
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OPTS = sum(CONDITIONAL_REQUIREMENTS.values(), []) # type: List[str]
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for dependency in OPTS:
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try:
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_check_requirement(dependency)
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except VersionConflict as e:
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deps_needed.append(dependency)
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errors.append(
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"Needed optional %s, got %s==%s"
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% (
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dependency,
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e.dist.project_name, # type: ignore[attr-defined] # noqa
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e.dist.version, # type: ignore[attr-defined] # noqa
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)
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)
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except DistributionNotFound:
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# If it's not found, we don't care
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pass
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if deps_needed:
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for err in errors:
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logging.error(err)
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raise DependencyException(deps_needed)
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def _check_requirement(dependency_string):
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"""Parses a dependency string, and checks if the specified requirement is installed
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Raises:
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VersionConflict if the requirement is installed, but with the the wrong version
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DistributionNotFound if nothing is found to provide the requirement
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"""
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req = Requirement.parse(dependency_string)
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# first check if the markers specify that this requirement needs installing
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if req.marker is not None and not req.marker.evaluate():
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# not required for this environment
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return
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get_provider(req)
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if __name__ == "__main__":
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import sys
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sys.stdout.writelines(req + "\n" for req in list_requirements())
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