Don't run mypy under Python3.6; check 3.6 path via Python3.7

Author: mr-c

.github/workflows/ci-tests.yml

@@ -21,6 +21,13 @@ jobs:
         py-ver-major: [3]
         py-ver-minor: [6, 7, 8, 9, 10, 11]
         step: [lint, unit, mypy]
+        exclude:
+          - py-ver-major: 3
+            py-ver-minor: 6
+            step: mypy
+          - py-ver-major: 3
+            py-ver-minor: 6
+            step: lint
 
     env:
       py-semver: ${{ format('{0}.{1}', matrix.py-ver-major, matrix.py-ver-minor) }}

Makefile

@@ -167,6 +167,12 @@ mypy: $(PYSOURCES)
 	fi  # if minimally required ruamel.yaml version is 0.15.99 or greater, than the above can be removed
 	MYPYPATH=$$MYPYPATH:mypy-stubs mypy $^
 
+mypy_3.6: $(filter-out setup.py,$(PYSOURCES))
+	MYPYPATH=$$MYPYPATH:mypy-stubs mypy --python-version 3.6 $^
+
+shellcheck: FORCE
+	shellcheck testing.sh release-test.sh
+
 pyupgrade: $(PYSOURCES)
 	pyupgrade --exit-zero-even-if-changed --py36-plus $^
 

tox.ini

@@ -3,7 +3,7 @@ envlist =
   py{36,37,38,39,310,311}-lint,
   py{36,37,38,39,310,311}-unit,
 
-  py{36,37,38,39,310,311}-mypy,
+  py{37,38,39,310,311}-mypy,
   py39-lintreadme,
   py39-pydocstyle
 
@@ -25,7 +25,7 @@ python =
 description =
   py{36,37,38,39,310,311}-unit: Run the unit tests
   py{36,37,38,39,310,311}-lint: Lint the Python code
-  py{36,37,38,39,310,311}-mypy: Check for type safety
+  py{37,38,39,310,311}-mypy: Check for type safety
   py311-pydocstyle: docstring style checker
   py311-lintreadme: Lint the README.rst->.md conversion
 
@@ -37,7 +37,7 @@ deps =
   py{36,37,38,39,310,311}-{unit,mypy}: -rtest-requirements.txt
   py{36,37,38,39,310,311}-lint: flake8-bugbear
   py{36,37,38,39,310,311}-lint: black
-  py{36,37,38,39,310,311}-mypy: -rmypy-requirements.txt
+  py{37,38,39,310,311}-mypy: -rmypy-requirements.txt
 
 setenv =
   py{36,37,38,39,310,311}-unit: LC_ALL = C.UTF-8
@@ -47,12 +47,13 @@ commands =
   py{36,37,38,39,310,311}-unit: make coverage-report coverage.xml PYTEST_EXTRA={posargs}
   py{36,37,38,39,310,311}-lint: make flake8
   py{36,37,38,39,310,311}-lint: make format-check
-  py{36,37,38,39,310,311}-mypy: make mypy
+  py{37,38,39,310,311}-mypy: make mypy
 
 allowlist_externals =
   py{36,37,38,39,310,311}-lint: flake8
   py{36,37,38,39,310,311}-lint: black
   py{36,37,38,39,310,311}-{mypy,shellcheck,lint,unit}: make
+  py37-mypy: make mypy_3.6
 
 skip_install =
   py{36,37,38,39,310,311}-lint: true