Rename src_py3 to src

.flake8

@@ -12,4 +12,4 @@ ignore =
 exclude =
   # tests have more relaxed formatting rules
   # and its own specific config in .flake8-tests
-  typing_extensions/src_py3/test_typing_extensions.py,
+  typing_extensions/src/test_typing_extensions.py,

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
         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_py3
+          cd typing_extensions/src
           python -m unittest test_typing_extensions.py
 
   linting:
@@ -63,4 +63,4 @@ jobs:
         run: flake8
 
       - name: Lint tests
-        run: flake8 --config=.flake8-tests typing_extensions/src_py3/test_typing_extensions.py
+        run: flake8 --config=.flake8-tests typing_extensions/src/test_typing_extensions.py

.github/workflows/package.yml

@@ -0,0 +1,71 @@
+name: Test packaging
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  wheel:
+    name: Test wheel install
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3
+
+      - name: Install pypa/build
+        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 
+          python -m pip install --upgrade build
+          python -m pip list
+
+      - name: Build and install wheel
+        run: |
+          cd typing_extensions
+          python -m build .
+          export path_to_file=$(find dist -type f -name "typing_extensions-*.whl")
+          echo "::notice::Installing wheel: $path_to_file"
+          pip install -vvv $path_to_file
+          python -m pip list
+
+      - name: Attempt to import typing_extensions
+        run: python -c "import typing_extensions; print(typing_extensions.__all__)"
+
+  sdist:
+    name: Test sdist install
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3
+
+      - name: Install pypa/build
+        run: |
+          # Be wary of running `pip install` here, since it becomes easy for us to
+          # accidentally pick up typing_extensions as installed by a dependency 
+          python -m pip install --upgrade build
+          python -m pip list
+
+      - name: Build and install sdist
+        run: |
+          cd typing_extensions
+          python -m build .
+          export path_to_file=$(find dist -type f -name "typing_extensions-*.tar.gz")
+          echo "::notice::Installing sdist: $path_to_file"
+          pip install -vvv $path_to_file
+          python -m pip list
+
+      - name: Attempt to import typing_extensions
+        run: python -c "import typing_extensions; print(typing_extensions.__all__)"

CONTRIBUTING.md

@@ -34,10 +34,10 @@ backwards-incompatible changes.
 
 - Build the source and wheel distributions:
 
-  - `pip3 install -U flit`
+  - `python -m pip install --upgrade build`
   - `cd typing_extensions`
   - `rm -rf dist/`
-  - `flit build --no-setup-py`
+  - `python -m build .`
 
 - Install the built distributions locally and test (if you were using `tox`, you already
   tested the source distribution).

typing_extensions/MANIFEST.in

@@ -1,3 +1,3 @@
 include CHANGELOG LICENSE README.rst
-include src_py3/typing_extensions.py
-include src_py3/test_typing_extensions.py
+include src/typing_extensions.py
+include src/test_typing_extensions.py

typing_extensions/pyproject.toml

@@ -61,7 +61,3 @@ classifiers = [
 [[project.authors]]
 name = "Guido van Rossum, Jukka Lehtosalo, Łukasz Langa, Michael Lee"
 email = "[email protected]"
-
-# This tells Flit that the module is stored in the src_py3 directory.
-[tool.flit.module]
-name = "src_py3/typing_extensions"

typing_extensions/tox.ini

@@ -2,5 +2,5 @@
 envlist = py36, py37, py38, py39
 
 [testenv]
-changedir = src_py3
+changedir = src
 commands = python -m unittest discover