Ship a zipapp of pipx

.github/workflows/tests.yml

@@ -114,3 +114,30 @@ jobs:
       with:
         user: __token__
         password: ${{ secrets.pypi_password }}
+
+  build-zipapp:
+    name: Build zipapp
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    needs: [verify-docs, lint, tests]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout ${{ github.ref }}
+        uses: actions/checkout@v3
+      - name: Set up Python ${{ env.default-python }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.default-python }}
+      - name: Upgrade pip, Install shiv
+        run: |
+          python -m pip install --upgrade pip
+          pip install shiv
+      - name: Build zipapp
+        run: shiv -c pipx -o ./pipx.pyz git+https://github.com/pypa/pipx@${{ github.ref_name }}
+      - name: Test zipapp
+        run: |
+          python ./pipx.pyz --version
+          python ./pipx.pyz install black
+      - name: Upload to releases
+        uses: softprops/action-gh-release@v1
+        with:
+          files: pipx.pyz

CHANGELOG.md

@@ -2,6 +2,7 @@
 - Add `pipx uninject` command (#820)
 - [docs] Fix `pipx run` examples and update Python versions used by `pipx install` examples
 - [docs] Add an example for installation from source with extras
+- Ship a [zipapp](https://docs.python.org/3/library/zipapp.html) of pipx
 
 - Change the program name to `path/to/python -m pipx` when running as `python -m pipx`