linters are separated into a new job in tests.yml

- They now run only on ubuntu-latest.

.github/workflows/tests.yml

@@ -1,3 +1,5 @@
+# Note: add all job names to the deploy-status.needs.
+
 name: Tests
 
 on:
@@ -30,6 +32,21 @@ jobs:
     - name: Test with tox py${{ matrix.python-version }}-${{ matrix.os }}
       run: tox -v
 
+  linters_checkers:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.12
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install .[tests]
+      - name: Mypy, Flake, Bandit, Black
+        run: tox -e mypy,flake8,bandit,black
+
   test_full:
     runs-on: ubuntu-latest
     steps:
@@ -55,7 +72,7 @@ jobs:
   # This allows us to have a branch protection rule this entire workflow
   deploy-status:
     runs-on: ubuntu-latest
-    needs: [ test_py_os_variations, test_full ]
+    needs: [ test_py_os_variations, linters_checkers, test_full ]
     if: always()
     steps:
       - name: Successful deploy

tests/README.md

@@ -1,10 +1,10 @@
 # The Testing Arena
 
 ## The CI
-The project has a CI tests suit, that runs on each pull-request (using [tox](https://tox.wiki/)):
-1. `--regular` tests for all supported python versions, for each os of windows, ubuntu, macos.
+The project has a CI tests suit, that runs on each pull-request:
+1. `--regular` tests for all supported python versions, for each os of windows, ubuntu, macos (using [tox](https://tox.wiki/)).
 2. Linters: [mypy](https://mypy-lang.org/), [flake8](https://flake8.pycqa.org/en/latest/), [bandit](https://bandit.readthedocs.io/en/latest/), [black](https://github.com/psf/black).
-   - They run for each os, with the latest supported python.
+   - They run on the latest supported python, on ubuntu.
 3. `pytest --all` in parallel.
    - Runs on the latest supported python, on ubuntu.
    - The results are printed as a table in the workflow summery ([for example](https://github.com/tomhea/flip-jump/actions/runs/7170673166/attempts/1#summary-19523946921)).

tox.ini

@@ -12,7 +12,7 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311
-    3.12: py312, mypy, flake8, bandit, black
+    3.12: py312
 
 [testenv]
 setenv = PYTHONPATH = {toxinidir}