github actions: only check invalidcode, linting is to be auto-handled by black

.github/workflows/tox.yml

@@ -27,7 +27,7 @@ jobs:
     - name: Test with tox
       run: tox -e py37-pytest
 
-  lint:
+  invalidcode:
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -38,11 +38,9 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install apt dependencies
-      run: sudo apt install ldap-utils slapd libsasl2-dev libldap2-dev libssl-dev
     - name: Install tox
       run: |
         python -m pip install --upgrade pip
         pip install tox tox-gh-actions
     - name: Linter
-      run: tox -e py37-lint
+      run: tox -e py37-invalidcode

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-  py37-{pytest,lint}
+  py37-{pytest,lint,invalidcode}
   format
   format-check
   docs
@@ -13,9 +13,11 @@ extras = tests
 deps =
   py37-pytest: .[tests]
   py37-lint: flake8
+  py37-invalidcode: flake8
 commands =
     py37-pytest: pytest {posargs} -c pytest.ini
     py37-lint: flake8 moulinette test
+    py37-invalidcode: flake8 moulinette test --select F
 
 [gh-actions]
 python =