Remove typing-extensions (#1189)

Author: JelleZijlstra

.flake8

@@ -9,7 +9,3 @@ ignore =
   E129,
   # consistency with mypy
   W504
-exclude =
-  # tests have more relaxed formatting rules
-  # and its own specific config in .flake8-tests
-  typing_extensions/src/test_typing_extensions.py,

.flake8-tests

@@ -8,36 +8,6 @@ permissions:
   contents: read
 
 jobs:
-  tests:
-    name: Run tests
-
-    strategy:
-      fail-fast: false
-      matrix:
-        # We try to test on the earliest available bugfix release of each
-        # Python version, because typing sometimes changed between bugfix releases.
-        # For available versions, see:
-        # https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json
-        python-version: ["3.7", "3.7.1", "3.8", "3.8.0", "3.9", "3.9.0", "3.10", "3.10.0", "3.11-dev"]
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Test typing_extensions
-        continue-on-error: ${{ matrix.python-version == '3.11-dev' }}
-        run: |
-          # Be wary of running `pip install` here, since it becomes easy for us to
-          # accidentally pick up typing_extensions as installed by a dependency
-          cd typing_extensions/src
-          python -m unittest test_typing_extensions.py
-
   linting:
     name: Lint
 
@@ -59,6 +29,3 @@ jobs:
 
       - name: Lint implementation
         run: flake8
-
-      - name: Lint tests
-        run: flake8 --config=.flake8-tests typing_extensions/src/test_typing_extensions.py

.github/workflows/ci.yml

@@ -1,10 +1,8 @@
 [![Chat at https://gitter.im/python/typing](https://badges.gitter.im/python/typing.svg)](https://gitter.im/python/typing?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-Static Typing for Python
-========================
+# Static Typing for Python
 
-Documentation and Support
--------------------------
+## Documentation and Support
 
 The documentation for Python's static typing can be found at
 [typing.readthedocs.io](https://typing.readthedocs.io/). You can get
@@ -16,26 +14,29 @@ Improvements to the type system should be discussed on the
 mailing list, although the [issues](https://github.com/python/typing/issues) in this
 repository contain some historic discussions.
 
-Repository Content
-------------------
+## Repository Content
 
 This GitHub repository is used for several things:
 
-- The `typing_extensions` module lives in the
-  [typing\_extensions](./typing_extensions) directory.
-
 - The documentation at [typing.readthedocs.io](https://typing.readthedocs.io/)
   is maintained in the [docs directory](./docs).
 
 - A [discussion forum](https://github.com/python/typing/discussions) for typing-related user
   help is hosted here.
 
-Historically, this repository hosted a backport of the
-[`typing` module](https://docs.python.org/3/library/typing.html) for older
-Python versions. The last released version, supporting Python 2.7 and 3.4,
-is [available at PyPI](https://pypi.org/project/typing/).
+Historically, this repository also hosted:
+
+- The `typing_extensions` package, which now lives in the
+  [typing_extensions](https://github.com/python/typing_extensions) repo.
+  It used to be in the `typing_extensions` directory.
+
+- A backport of the
+  [`typing` module](https://docs.python.org/3/library/typing.html) for older
+  Python versions. It was removed after all Python versions that lack `typing`
+  in the standard library reached end of life. The last released version,
+  supporting Python 2.7 and 3.4,
+  is [available at PyPI](https://pypi.org/project/typing/).
 
-Workflow
---------
+## Workflow
 
 See [CONTRIBUTING.md](/CONTRIBUTING.md) for more.