run mypy during package build

debian/control

@@ -18,6 +18,7 @@ Build-Depends:
  flake8,
  isort <!nocheck>,
  lsb-release,
+ mypy <!nocheck>,
  pylint <!nocheck>,
  python3-all,
  python3-apt,
@@ -30,6 +31,7 @@ Build-Depends:
  python3-pytest,
  python3-requests <!nocheck>,
  python3-setuptools,
+ python3-typeshed <!nocheck>,
  python3-yaml <!nocheck>,
 Standards-Version: 4.7.2
 Vcs-Git: https://git.launchpad.net/ubuntu-dev-tools

debian/rules

@@ -3,7 +3,7 @@
 override_dh_auto_clean:
 	dh_auto_clean
 	rm -f .coverage
-	rm -rf .tox
+	rm -rf .mypy_cache .tox
 
 override_dh_auto_test:
 ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))

pyproject.toml

@@ -4,3 +4,7 @@ line-length = 99
 [tool.isort]
 line_length = 99
 profile = "black"
+
+[tool.mypy]
+disallow_incomplete_defs = true
+ignore_missing_imports = true

run-linters

@@ -21,6 +21,12 @@ run_flake8() {
     flake8 --max-line-length=99 --ignore=E203,W503 . $PYTHON_SCRIPTS
 }
 
+run_mypy() {
+    echo "Running mypy..."
+    mypy .
+    mypy --scripts-are-modules $PYTHON_SCRIPTS
+}
+
 run_pylint() {
     echo "Running pylint..."
     pylint "$@" $(find * -name '*.py') $PYTHON_SCRIPTS
@@ -31,10 +37,12 @@ if test "${1-}" = "--errors-only"; then
     run_black || true
     run_isort || true
     run_flake8 || true
+    run_mypy
     run_pylint --errors-only
 else
     run_black
     run_isort
     run_flake8
+    run_mypy
     run_pylint
 fi