Merge remote-tracking branch 'origin/develop' into dmr/pyproject-poetry

we did need it to `install` though, (I think?)

.dockerignore

@@ -8,8 +8,4 @@
 !pyproject.toml
 !poetry.lock
 
-# TODO: remove these once we have moved over to using poetry-core in pyproject.toml
-!MANIFEST.in
-!setup.py
-
 **/__pycache__

.gitignore

@@ -15,8 +15,8 @@ _trial_temp*/
 .DS_Store
 __pycache__/
 
-# We do want the poetry lockfile. TODO: is there a good reason for ignoring
-# '*.lock' above? If not, let's nuke it.
+# We do want the poetry lockfile.
+# TODO: is there a good reason for ignoring '*.lock' above? If not, nuke it.
 !poetry.lock
 
 # stuff that is likely to exist when you run a server locally

MANIFEST.in

@@ -1,54 +0,0 @@
-include LICENSE
-include VERSION
-include *.rst
-include *.md
-include demo/README
-include demo/demo.tls.dh
-include demo/*.py
-include demo/*.sh
-
-include synapse/py.typed
-recursive-include synapse/storage *.sql
-recursive-include synapse/storage *.sql.postgres
-recursive-include synapse/storage *.sql.sqlite
-recursive-include synapse/storage *.py
-recursive-include synapse/storage *.txt
-recursive-include synapse/storage *.md
-
-recursive-include docs *
-recursive-include scripts-dev *
-recursive-include synapse *.pyi
-recursive-include tests *.py
-recursive-include tests *.pem
-recursive-include tests *.p8
-recursive-include tests *.crt
-recursive-include tests *.key
-
-recursive-include synapse/res *
-recursive-include synapse/static *.css
-recursive-include synapse/static *.gif
-recursive-include synapse/static *.html
-recursive-include synapse/static *.js
-
-exclude .codecov.yml
-exclude .coveragerc
-exclude .dockerignore
-exclude .editorconfig
-exclude Dockerfile
-exclude mypy.ini
-exclude sytest-blacklist
-exclude test_postgresql.sh
-
-include book.toml
-include pyproject.toml
-recursive-include changelog.d *
-
-include .flake8
-prune .circleci
-prune .github
-prune .ci
-prune contrib
-prune debian
-prune demo/etc
-prune docker
-prune stubs

README.rst

@@ -293,24 +293,26 @@ directory of your choice::
     git clone https://github.com/matrix-org/synapse.git
     cd synapse
 
-Synapse has a number of external dependencies, that are easiest
-to install using pip and a virtualenv::
+Synapse has a number of external dependencies. We maintain a fixed development
+environment using [poetry](https://python-poetry.org/). First, install poetry. We recommend
 
-    python3 -m venv ./env
-    source ./env/bin/activate
-    pip install -e ".[all,dev]"
+    pip install --user pipx
+    pipx install poetry
+
+but see the `poetry installation docs <https://python-poetry.org/docs/#installation>`_
+for more details. Then ask poetry to create a virtual environment from the project
+and install Synapse's dependencies::
+
+    poetry install --extras "all test"
 
 This will run a process of downloading and installing all the needed
-dependencies into a virtual env. If any dependencies fail to install,
-try installing the failing modules individually::
-
-    pip install -e "module-name"
+dependencies into a virtual env.
 
 We recommend using the demo which starts 3 federated instances running on ports `8080` - `8082`
 
-    ./demo/start.sh
+    poetry run ./demo/start.sh
 
-(to stop, you can use `./demo/stop.sh`)
+(to stop, you can use `poetry run ./demo/stop.sh`)
 
 See the [demo documentation](https://matrix-org.github.io/synapse/develop/development/demo.html)
 for more information.
@@ -318,14 +320,14 @@ for more information.
 If you just want to start a single instance of the app and run it directly::
 
     # Create the homeserver.yaml config once
-    python -m synapse.app.homeserver \
+    poetry run synapse_homeserver \
       --server-name my.domain.name \
       --config-path homeserver.yaml \
       --generate-config \
       --report-stats=[yes|no]
 
     # Start the app
-    python -m synapse.app.homeserver --config-path homeserver.yaml
+    poetry run synapse_homeserver --config-path homeserver.yaml
 
 
 Running the unit tests
@@ -334,7 +336,7 @@ Running the unit tests
 After getting up and running, you may wish to run Synapse's unit tests to
 check that everything is installed correctly::
 
-    trial tests
+    poetry run trial tests
 
 This should end with a 'PASSED' result (note that exact numbers will
 differ)::

changelog.d/12337.feature

@@ -0,0 +1 @@
+Use poetry to manage Synapse's dependencies.

debian/build_virtualenv

@@ -37,7 +37,6 @@ python3 -m venv "$TEMP_VENV"
 source "$TEMP_VENV/bin/activate"
 pip install -U pip
 pip install poetry==1.2.0b1
-poetry export --extras all --extras test -o exported_requirements.txt
 deactivate
 rm -rf "$TEMP_VENV"
 

docker/Dockerfile

@@ -59,7 +59,7 @@ RUN --mount=type=cache,target=/root/.cache/pip \
 WORKDIR /synapse
 
 # Copy just what we need to run `poetry export`...
-COPY pyproject.toml poetry.lock README.rst /synapse/
+COPY pyproject.toml poetry.lock /synapse/
 
 RUN /root/.local/bin/poetry export --extras all -o /synapse/requirements.txt
 
@@ -98,9 +98,7 @@ RUN --mount=type=cache,target=/root/.cache/pip \
 # Copy over the rest of the synapse source code.
 COPY synapse /synapse/synapse/
 # ... and what we need to `pip install`.
-# TODO: once pyproject.toml declares poetry-core as its build system, we'll need to copy
-# pyproject.toml here, ditching setup.py and MANIFEST.in.
-COPY setup.py MANIFEST.in README.rst /synapse/
+COPY pyproject.toml poetry.lock README.rst /synapse/
 
 # Install the synapse package itself.
 RUN pip install --prefix="/install" --no-deps --no-warn-script-location /synapse

docs/development/contributing_guide.md

@@ -48,16 +48,16 @@ can find many good git tutorials on the web.
 
 # 4. Install the dependencies
 
-Once you have installed Python 3 and added the source, please open a terminal and
-setup a *virtualenv*, as follows:
+Synapse uses the [poetry](https://python-poetry.org/) project to manage its dependencies
+and development environment. Once you have installed Python 3 and added the
+source, you should [install poetry](https://python-poetry.org/docs/#installation).
+We recommend installing `poetry` using `pipx`; see their instructions for details.
+
+Next, open a terminal and install dependencies as follows:
 
 ```sh
 cd path/where/you/have/cloned/the/repository
-python3 -m venv ./env
-source ./env/bin/activate
-pip install wheel
-pip install -e ".[all,dev]"
-pip install tox
+poetry install --extras "all test"
 ```
 
 This will install the developer dependencies for the project.
@@ -117,11 +117,10 @@ The linters look at your code and do two things:
 - ensure that your code follows the coding style adopted by the project;
 - catch a number of errors in your code.
 
-The linter takes no time at all to run as soon as you've [downloaded the dependencies into your python virtual environment](#4-install-the-dependencies).
+The linter takes no time at all to run as soon as you've [downloaded the dependencies](#4-install-the-dependencies).
 
 ```sh
-source ./env/bin/activate
-./scripts-dev/lint.sh
+poetry run ./scripts-dev/lint.sh
 ```
 
 Note that this script *will modify your files* to fix styling errors.
@@ -131,15 +130,13 @@ If you wish to restrict the linters to only the files changed since the last com
 (much faster!), you can instead run:
 
 ```sh
-source ./env/bin/activate
-./scripts-dev/lint.sh -d
+poetry run ./scripts-dev/lint.sh -d
 ```
 
 Or if you know exactly which files you wish to lint, you can instead run:
 
 ```sh
-source ./env/bin/activate
-./scripts-dev/lint.sh path/to/file1.py path/to/file2.py path/to/folder
+poetry run ./scripts-dev/lint.sh path/to/file1.py path/to/file2.py path/to/folder
 ```
 
 ## Run the unit tests (Twisted trial).
@@ -148,16 +145,14 @@ The unit tests run parts of Synapse, including your changes, to see if anything
 was broken. They are slower than the linters but will typically catch more errors.
 
 ```sh
-source ./env/bin/activate
-trial tests
+poetry run trial tests
 ```
 
 If you wish to only run *some* unit tests, you may specify
 another module instead of `tests` - or a test class or a method:
 
 ```sh
-source ./env/bin/activate
-trial tests.rest.admin.test_room tests.handlers.test_admin.ExfiltrateData.test_invite
+poetry run trial tests.rest.admin.test_room tests.handlers.test_admin.ExfiltrateData.test_invite
 ```
 
 If your tests fail, you may wish to look at the logs (the default log level is `ERROR`):
@@ -169,7 +164,7 @@ less _trial_temp/test.log
 To increase the log level for the tests, set `SYNAPSE_TEST_LOG_LEVEL`:
 
 ```sh
-SYNAPSE_TEST_LOG_LEVEL=DEBUG trial tests
+SYNAPSE_TEST_LOG_LEVEL=DEBUG poetry run trial tests
 ```
 
 By default, tests will use an in-memory SQLite database for test data. For additional
@@ -180,7 +175,7 @@ database state to be stored in a file named `test.db` under the trial process'
 working directory. Typically, this ends up being `_trial_temp/test.db`. For example:
 
 ```sh
-SYNAPSE_TEST_PERSIST_SQLITE_DB=1 trial tests
+SYNAPSE_TEST_PERSIST_SQLITE_DB=1 poetry run trial tests
 ```
 
 The database file can then be inspected with:

docs/upgrade.md

@@ -19,32 +19,35 @@ this document.
     packages](setup/installation.md#prebuilt-packages), you will need to follow the
     normal process for upgrading those packages.
 
+-   If Synapse was installed using pip then upgrade to the latest
+    version by running:
+
+    ```bash
+    pip install --upgrade matrix-synapse
+    ```
+
 -   If Synapse was installed from source, then:
 
-    1.  Activate the virtualenv before upgrading. For example, if
-        Synapse is installed in a virtualenv in `~/synapse/env` then
+    1.  Obtain the latest version of the source code. Git users can run
+        `git pull` to do this.
+
+    2.  If you're running Synapse in a virtualenv, make sure to activate it before
+        upgrading. For example, if Synapse is installed in a virtualenv in `~/synapse/env` then
         run:
 
         ```bash
         source ~/synapse/env/bin/activate
-        ```
-
-    2.  If Synapse was installed using pip then upgrade to the latest
-        version by running:
-
-        ```bash
-        pip install --upgrade matrix-synapse
-        ```
-
-        If Synapse was installed using git then upgrade to the latest
-        version by running:
-
-        ```bash
-        git pull
         pip install --upgrade .
         ```
+        Include any relevant extras between square brackets, e.g. `pip install --upgrade .[postgres,oidc]`.
 
-    3.  Restart Synapse:
+    3.  If you're using `poetry` to manage a Synapse installation, run:
+        ```bash
+        poetry install
+        ```
+        Include any relevant extras with `--extras`, e.g. `poetry install --extras "postgres oidc"`. 
+
+    4.  Restart Synapse:
 
         ```bash
         synctl restart

mypy.ini

@@ -13,7 +13,6 @@ no_implicit_optional = True
 files =
   docker/,
   scripts-dev/,
-  setup.py,
   synapse/,
   tests/
 

setup.cfg

@@ -1,9 +0,0 @@
-[check-manifest]
-ignore =
-    .git-blame-ignore-revs
-    contrib
-    contrib/*
-    docs/*
-    pylint.cfg
-    tox.ini
-

setup.py

@@ -1,183 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright 2014-2017 OpenMarket Ltd
-# Copyright 2017 Vector Creations Ltd
-# Copyright 2017-2018 New Vector Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-import os
-from typing import Any, Dict
-
-from setuptools import Command, find_packages, setup
-
-here = os.path.abspath(os.path.dirname(__file__))
-
-
-# Some notes on `setup.py test`:
-#
-# Once upon a time we used to try to make `setup.py test` run `tox` to run the
-# tests. That's a bad idea for three reasons:
-#
-# 1: `setup.py test` is supposed to find out whether the tests work in the
-#    *current* environmentt, not whatever tox sets up.
-# 2: Empirically, trying to install tox during the test run wasn't working ("No
-#    module named virtualenv").
-# 3: The tox documentation advises against it[1].
-#
-# Even further back in time, we used to use setuptools_trial [2]. That has its
-# own set of issues: for instance, it requires installation of Twisted to build
-# an sdist (because the recommended mode of usage is to add it to
-# `setup_requires`). That in turn means that in order to successfully run tox
-# you have to have the python header files installed for whichever version of
-# python tox uses (which is python3 on recent ubuntus, for example).
-#
-# So, for now at least, we stick with what appears to be the convention among
-# Twisted projects, and don't attempt to do anything when someone runs
-# `setup.py test`; instead we direct people to run `trial` directly if they
-# care.
-#
-# [1]: http://tox.readthedocs.io/en/2.5.0/example/basic.html#integration-with-setup-py-test-command
-# [2]: https://pypi.python.org/pypi/setuptools_trial
-class TestCommand(Command):
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        print(
-            """Synapse's tests cannot be run via setup.py. To run them, try:
-     PYTHONPATH="." trial tests
-"""
-        )
-
-
-def read_file(path_segments):
-    """Read a file from the package. Takes a list of strings to join to
-    make the path"""
-    file_path = os.path.join(here, *path_segments)
-    with open(file_path) as f:
-        return f.read()
-
-
-def exec_file(path_segments):
-    """Execute a single python file to get the variables defined in it"""
-    result: Dict[str, Any] = {}
-    code = read_file(path_segments)
-    exec(code, result)
-    return result
-
-
-version = exec_file(("synapse", "__init__.py"))["__version__"]
-dependencies = exec_file(("synapse", "python_dependencies.py"))
-long_description = read_file(("README.rst",))
-
-REQUIREMENTS = dependencies["REQUIREMENTS"]
-CONDITIONAL_REQUIREMENTS = dependencies["CONDITIONAL_REQUIREMENTS"]
-ALL_OPTIONAL_REQUIREMENTS = dependencies["ALL_OPTIONAL_REQUIREMENTS"]
-
-# Make `pip install matrix-synapse[all]` install all the optional dependencies.
-CONDITIONAL_REQUIREMENTS["all"] = list(ALL_OPTIONAL_REQUIREMENTS)
-
-# Developer dependencies should not get included in "all".
-#
-# We pin black so that our tests don't start failing on new releases.
-CONDITIONAL_REQUIREMENTS["lint"] = [
-    "isort==5.7.0",
-    "black==22.3.0",
-    "flake8-comprehensions",
-    "flake8-bugbear==21.3.2",
-    "flake8",
-]
-
-CONDITIONAL_REQUIREMENTS["mypy"] = [
-    "mypy==0.931",
-    "mypy-zope==0.3.5",
-    "types-bleach>=4.1.0",
-    "types-jsonschema>=3.2.0",
-    "types-opentracing>=2.4.2",
-    "types-Pillow>=8.3.4",
-    "types-psycopg2>=2.9.9",
-    "types-pyOpenSSL>=20.0.7",
-    "types-PyYAML>=5.4.10",
-    "types-requests>=2.26.0",
-    "types-setuptools>=57.4.0",
-]
-
-# Dependencies which are exclusively required by unit test code. This is
-# NOT a list of all modules that are necessary to run the unit tests.
-# Tests assume that all optional dependencies are installed.
-#
-# parameterized_class decorator was introduced in parameterized 0.7.0
-CONDITIONAL_REQUIREMENTS["test"] = ["parameterized>=0.7.0", "idna>=2.5"]
-
-CONDITIONAL_REQUIREMENTS["dev"] = (
-    CONDITIONAL_REQUIREMENTS["lint"]
-    + CONDITIONAL_REQUIREMENTS["mypy"]
-    + CONDITIONAL_REQUIREMENTS["test"]
-    + [
-        # The following are used by the release script
-        "click==8.1.0",
-        "redbaron==0.9.2",
-        "GitPython==3.1.14",
-        "commonmark==0.9.1",
-        "pygithub==1.55",
-        # The following are executed as commands by the release script.
-        "twine",
-        "towncrier",
-    ]
-)
-
-setup(
-    name="matrix-synapse",
-    version=version,
-    packages=find_packages(exclude=["tests", "tests.*"]),
-    description="Reference homeserver for the Matrix decentralised comms protocol",
-    install_requires=REQUIREMENTS,
-    extras_require=CONDITIONAL_REQUIREMENTS,
-    include_package_data=True,
-    zip_safe=False,
-    long_description=long_description,
-    long_description_content_type="text/x-rst",
-    python_requires="~=3.7",
-    entry_points={
-        "console_scripts": [
-            # Application
-            "synapse_homeserver = synapse.app.homeserver:main",
-            "synapse_worker = synapse.app.generic_worker:main",
-            "synctl = synapse._scripts.synctl:main",
-            # Scripts
-            "export_signing_key = synapse._scripts.export_signing_key:main",
-            "generate_config = synapse._scripts.generate_config:main",
-            "generate_log_config = synapse._scripts.generate_log_config:main",
-            "generate_signing_key = synapse._scripts.generate_signing_key:main",
-            "hash_password = synapse._scripts.hash_password:main",
-            "register_new_matrix_user = synapse._scripts.register_new_matrix_user:main",
-            "synapse_port_db = synapse._scripts.synapse_port_db:main",
-            "synapse_review_recent_signups = synapse._scripts.review_recent_signups:main",
-            "update_synapse_database = synapse._scripts.update_synapse_database:main",
-        ]
-    },
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Topic :: Communications :: Chat",
-        "License :: OSI Approved :: Apache Software License",
-        "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-    ],
-    cmdclass={"test": TestCommand},
-)

synapse/__init__.py

@@ -20,6 +20,8 @@ import json
 import os
 import sys
 
+from matrix_common.versionstring import get_distribution_version_string
+
 # Check that we're not running on an unsupported Python version.
 if sys.version_info < (3, 7):
     print("Synapse requires Python 3.7 or above.")
@@ -68,7 +70,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.57.0rc1"
+__version__ = get_distribution_version_string("matrix-synapse")
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when

synapse/python_dependencies.py

@@ -1,151 +0,0 @@
-# Copyright 2015, 2016 OpenMarket Ltd
-# Copyright 2017 Vector Creations Ltd
-# Copyright 2018 New Vector Ltd
-# Copyright 2020 The Matrix.org Foundation C.I.C.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import itertools
-import logging
-from typing import Set
-
-logger = logging.getLogger(__name__)
-
-
-# REQUIREMENTS is a simple list of requirement specifiers[1], and must be
-# installed. It is passed to setup() as install_requires in setup.py.
-#
-# CONDITIONAL_REQUIREMENTS is the optional dependencies, represented as a dict
-# of lists. The dict key is the optional dependency name and can be passed to
-# pip when installing. The list is a series of requirement specifiers[1] to be
-# installed when that optional dependency requirement is specified. It is passed
-# to setup() as extras_require in setup.py
-#
-# Note that these both represent runtime dependencies (and the versions
-# installed are checked at runtime).
-#
-# Also note that we replicate these constraints in the Synapse Dockerfile while
-# pre-installing dependencies. If these constraints are updated here, the same
-# change should be made in the Dockerfile.
-#
-# [1] https://pip.pypa.io/en/stable/reference/pip_install/#requirement-specifiers.
-
-REQUIREMENTS = [
-    # we use the TYPE_CHECKER.redefine method added in jsonschema 3.0.0
-    "jsonschema>=3.0.0",
-    # frozendict 2.1.2 is broken on Debian 10: https://github.com/Marco-Sulla/python-frozendict/issues/41
-    "frozendict>=1,!=2.1.2",
-    "unpaddedbase64>=1.1.0",
-    "canonicaljson>=1.4.0",
-    # we use the type definitions added in signedjson 1.1.
-    "signedjson>=1.1.0",
-    "pynacl>=1.2.1",
-    # validating SSL certs for IP addresses requires service_identity 18.1.
-    "service_identity>=18.1.0",
-    # Twisted 18.9 introduces some logger improvements that the structured
-    # logger utilises
-    "Twisted[tls]>=18.9.0",
-    "treq>=15.1",
-    # Twisted has required pyopenssl 16.0 since about Twisted 16.6.
-    "pyopenssl>=16.0.0",
-    "pyyaml>=3.11",
-    "pyasn1>=0.1.9",
-    "pyasn1-modules>=0.0.7",
-    "bcrypt>=3.1.0",
-    "pillow>=5.4.0",
-    "sortedcontainers>=1.4.4",
-    "pymacaroons>=0.13.0",
-    "msgpack>=0.5.2",
-    "phonenumbers>=8.2.0",
-    # we use GaugeHistogramMetric, which was added in prom-client 0.4.0.
-    "prometheus_client>=0.4.0",
-    # we use `order`, which arrived in attrs 19.2.0.
-    # Note: 21.1.0 broke `/sync`, see #9936
-    "attrs>=19.2.0,!=21.1.0",
-    "netaddr>=0.7.18",
-    # Jinja 2.x is incompatible with MarkupSafe>=2.1. To ensure that admins do not
-    # end up with a broken installation, with recent MarkupSafe but old Jinja, we
-    # add a lower bound to the Jinja2 dependency.
-    "Jinja2>=3.0",
-    "bleach>=1.4.3",
-    # We use `ParamSpec`, which was added in `typing-extensions` 3.10.0.0.
-    "typing-extensions>=3.10.0",
-    # We enforce that we have a `cryptography` version that bundles an `openssl`
-    # with the latest security patches.
-    "cryptography>=3.4.7",
-    # ijson 3.1.4 fixes a bug with "." in property names
-    "ijson>=3.1.4",
-    "matrix-common~=1.1.0",
-    # We need packaging.requirements.Requirement, added in 16.1.
-    "packaging>=16.1",
-    # At the time of writing, we only use functions from the version `importlib.metadata`
-    # which shipped in Python 3.8. This corresponds to version 1.4 of the backport.
-    "importlib_metadata>=1.4 ; python_version < '3.8'",
-]
-
-CONDITIONAL_REQUIREMENTS = {
-    "matrix-synapse-ldap3": ["matrix-synapse-ldap3>=0.1"],
-    "postgres": [
-        # we use execute_values with the fetch param, which arrived in psycopg 2.8.
-        "psycopg2>=2.8 ; platform_python_implementation != 'PyPy'",
-        "psycopg2cffi>=2.8 ; platform_python_implementation == 'PyPy'",
-        "psycopg2cffi-compat==1.1 ; platform_python_implementation == 'PyPy'",
-    ],
-    "saml2": [
-        "pysaml2>=4.5.0",
-    ],
-    "oidc": ["authlib>=0.14.0"],
-    # systemd-python is necessary for logging to the systemd journal via
-    # `systemd.journal.JournalHandler`, as is documented in
-    # `contrib/systemd/log_config.yaml`.
-    "systemd": ["systemd-python>=231"],
-    "url_preview": ["lxml>=4.2.0"],
-    "sentry": ["sentry-sdk>=0.7.2"],
-    "opentracing": ["jaeger-client>=4.0.0", "opentracing>=2.2.0"],
-    "jwt": ["pyjwt>=1.6.4"],
-    # hiredis is not a *strict* dependency, but it makes things much faster.
-    # (if it is not installed, we fall back to slow code.)
-    "redis": ["txredisapi>=1.4.7", "hiredis"],
-    # Required to use experimental `caches.track_memory_usage` config option.
-    "cache_memory": ["pympler"],
-}
-
-ALL_OPTIONAL_REQUIREMENTS: Set[str] = set()
-
-for name, optional_deps in CONDITIONAL_REQUIREMENTS.items():
-    # Exclude systemd as it's a system-based requirement.
-    # Exclude lint as it's a dev-based requirement.
-    if name not in ["systemd"]:
-        ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
-
-
-# ensure there are no double-quote characters in any of the deps (otherwise the
-# 'pip install' incantation in DependencyException will break)
-for dep in itertools.chain(
-    REQUIREMENTS,
-    *CONDITIONAL_REQUIREMENTS.values(),
-):
-    if '"' in dep:
-        raise Exception(
-            "Dependency `%s` contains double-quote; use single-quotes instead" % (dep,)
-        )
-
-
-def list_requirements():
-    return list(set(REQUIREMENTS) | ALL_OPTIONAL_REQUIREMENTS)
-
-
-if __name__ == "__main__":
-    import sys
-
-    sys.stdout.writelines(req + "\n" for req in list_requirements())