Test multiple python versions in GitHub actions (#1142)

When moving off CircleCI, we moved to only testing one python version.
This change makes it so we test the highest and lowest supported
versions in parallel.

.github/workflows/test.yaml

@@ -6,33 +6,42 @@ on:
 jobs:
   test-python:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        py-version: ["3.9", "3.12"]
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Py-prep
-        run: make py-prep
+        run: make py-prep PY_VERSION=${{ matrix.py-version }}
       - name: Check Format
         run: uvx ruff format --check
       - name: Lint
         run: uvx ruff check --fix sematic
       - name: MyPy
+        if: matrix.py-version == '3.12'
         run: uv run mypy -p sematic --disable-error-code import-untyped
       - name: Test
         run: |
           source .venv/bin/activate
+          python3 -c "import sys; print(sys.version)"
           pytest
       - name: Check Schemas
+        if: matrix.py-version == '3.12'
         run: git checkout . && make migrate_up_sqlite && make update-schema && git diff --exit-code
       - name: Wheel
+        if: matrix.py-version == '3.12'
         run: |
           make ui
           make uv-wheel
       - uses: actions/upload-artifact@v4
+        if: matrix.py-version == '3.12'
         with:
           name: sematic-wheel
           path: "./dist/sematic-*.whl"
           retention-days: 10
       - uses: actions/upload-artifact@v4
+        if: matrix.py-version == '3.12'
         with:
           name: sematic-wheel-test
           path: "sematic/tests/integration/test_pip_install.sh"

Makefile

@@ -3,6 +3,7 @@ SHELL=/bin/bash
 UNAME_S := $(shell uname -s)
 RED := \033[0;31m
 NO_COLOR := \033[1;0m
+PY_VERSION := "3.12"
 
 migrate_up_rds:
 	cd sematic; DATABASE_URL=${DATABASE_URL} dbmate -s db/schema.sql.pg up 
@@ -33,7 +34,7 @@ fix:
 py-prep:
 	uv --version || curl -LsSf https://astral.sh/uv/install.sh | sh
 	rm -rf ".venv" || echo "No virtualenv yet"
-	uv venv --python 3.12
+	uv venv --python $(PY_VERSION)
 	uv sync --extra examples --extra ray
 	uv tool install --force ruff==0.8.3
 	uv pip install mypy==1.13.0

sematic/tests/test_3_10_function.py

@@ -1,3 +1,5 @@
+import sys
+
 # Third-party
 import pytest
 
@@ -6,6 +8,7 @@
 from sematic.runners.silent_runner import SilentRunner
 
 
+@pytest.mark.skipif(sys.version_info < (3, 10), reason="Requires python >=3.10")
 def test_decorator_3_10_style_hints():
     @func
     def f(a: list[int], b: dict[str, str]) -> int | float: