Use MegaLinter for linting in workflows

.github/workflows/linter.yml

@@ -0,0 +1,45 @@
+---
+    # MegaLinter GitHub Action configuration file
+    # More info at https://megalinter.io
+    name: MegaLinter
+    on:
+      push:
+        branches: "master"
+      pull_request:
+
+    jobs:
+      megalinter:
+        name: MegaLinter
+        runs-on: ubuntu-latest
+        permissions:
+          # Give the linter write permission to comment on PRs (if PR is not from fork)
+          issues: write
+          pull-requests: write
+        steps:
+          # Git Checkout
+          - name: Checkout Code
+            uses: actions/checkout@v4
+            with:
+              token: ${{ secrets.GITHUB_TOKEN }}
+              fetch-depth: 0
+          # MegaLinter
+          - name: MegaLinter
+            id: ml
+            # You can override MegaLinter flavor used to have faster performances
+            # More info at https://megalinter.io/flavors/
+            uses: oxsecurity/megalinter/flavors/python@v7
+            env:
+              GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+              # Validate whole codebase on pushes and only changes on pull requests
+              # VALIDATE_ALL_CODEBASE: ${{ github.event_name == 'push'}}
+              VALIDATE_ALL_CODEBASE: true
+
+          # Upload MegaLinter artifacts
+          - name: Archive production artifacts
+            if: success() || failure()
+            uses: actions/upload-artifact@v4
+            with:
+              name: MegaLinter reports
+              path: |
+                megalinter-reports
+                mega-linter.log

.github/workflows/python.yml

@@ -6,36 +6,7 @@ on:
   pull_request:
 
 jobs:
-  lint:
-    runs-on: ubuntu-latest
-    name: Lint
-    steps:
-    - uses: actions/checkout@v4
-
-    - uses: actions/cache@v4
-      id: cache
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-        restore-keys: |
-          ${{ runner.os }}-pip-
-
-    - name: Set up Python
-      uses: actions/setup-python@v5
-      with:
-        python-version: 3.11
-
-    - name: Install dependencies
-      run: |
-        pip install -U pip
-        pip install tox flake8
-
-    - name: flake8 critical lint
-      run: tox -e flake8-critical
-
   test:
-    needs: lint
-
     name: "Python ${{ matrix.python-version }}"
     runs-on: ubuntu-latest
 

.mega-linter.yml

@@ -0,0 +1,14 @@
+# All available variables are described in documentation
+# https://megalinter.io/configuration/
+
+LINTER_RULES_PATH: .
+
+ENABLE_LINTERS:
+  - PYTHON_BLACK
+  - PYTHON_FLAKE8
+
+# Make workflow fail even on non blocking errors
+FORMATTERS_DISABLE_ERRORS: false
+
+PYTHON_BLACK_CONFIG_FILE: pyproject.toml
+PYTHON_FLAKE8_CONFIG_FILE: tox.ini

pyproject.toml

@@ -89,7 +89,8 @@ write_to = "src/argus/version.py"
 
 [tool.black]
 line-length = 120
-exclude = '''
+# Exclude files even when passed directly as argument (for MegaLinter)
+force-exclude = '''
 (
   /(
       \.eggs         # exclude a few common directories in the