Use system Python in CI for uv

Author: nathanjmcdougall

.github/workflows/ci.yml

@@ -14,20 +14,13 @@ jobs:
       - name: Setup uv and Handle Its Cache
         uses: hynek/setup-cached-uv@v2.0.0
 
-      - name: Intall Python and create virtualenv
-        run: |
-          uv python install
-          uv venv
-
-      - name: Activate Python virtualenv
-        uses: knicknic/os-specific-run@v1
+      - name: Install Python
+        uses: actions/setup-python@v2
         with:
-          linux: source .venv/bin/activate
-          macos: source .venv/bin/activate
-          windows: .\.venv\Scripts\active
+          python-version: ${{ matrix.python-version }}
 
       - name: Install Dependencies
-        run: uv sync
+        run: uv sync --python-preference system
 
       - name: Run pytest
         uses: pavelzw/pytest-action@v2.2.0
@@ -36,3 +29,4 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.12]

doc/philosophy/introspection.md

@@ -28,19 +28,8 @@ necessarily listed chronologically):
 - Ran `uv init --name usethis`.
 - Ran `uv python pin 3.12.4`.
 
-## Local development configuration
-
-- Cloned the repo from GitHub.
-- Ran `uv sync`.
-- Set up git username, email, and signing key.
-
-## Set up tests
+## Add GitHub actions CI
 
-- Ran `uv add pytest`.
-- Created a tests folder.
-- Added a trivial test module `test_nothing.py`.
-- Add a trivial test `test_pass` to the test module.
-- Confirm pytest is working with `pytest tests` in the CLI.
 - Create a GitHub workflow file for CI manually in `.github/workflows/ci.yml`.
 - Use the following configuration to support GitFlow-style branch management:
 
@@ -55,7 +44,22 @@ on:
 
 - Add <https://github.com/hynek/setup-cached-uv> to set up uv in CI.
 - Add <https://github.com/actions/checkout>.
-- Set up the GitHub actions matrix to use Ubuntu, Windows and MacOS.
-- Set up logic to use uv to install Python, create a venv, activate it, and sync.
+- Set up the GitHub actions matrix to use Ubuntu, Windows and MacOS
+- Set up the GitHub actions to use different Python versions.
+- Set up logic to use uv in GitHub actions.
+
+## Local development configuration
+
+- Cloned the repo from GitHub.
+- Ran `uv sync`.
+- Set up git username, email, and signing key.
+
+## Set up tests
+
+- Ran `uv add pytest`.
+- Created a tests folder.
+- Added a trivial test module `test_nothing.py`.
+- Add a trivial test `test_pass` to the test module.
+- Confirm pytest is working with `pytest tests` in the CLI.
 - Add <https://github.com/pavelzw/pytest-action> to set up pytest in CI, using the
   correct CLI args to pytest.