mypy: Add to tox

misc/requirements/requirements-mypy.txt

@@ -0,0 +1,5 @@
+# This file is automatically generated by scripts/dev/recompile_requirements.py
+
+mypy==0.641
+mypy-extensions==0.4.1
+typed-ast==1.1.0

misc/requirements/requirements-mypy.txt-raw

@@ -0,0 +1 @@
+mypy

tox.ini

@@ -188,3 +188,13 @@ deps =
 whitelist_externals = eslint
 changedir = {toxinidir}/qutebrowser/javascript
 commands = eslint --color --report-unused-disable-directives .
+
+[testenv:mypy]
+basepython = {env:PYTHON:python3}
+passenv =
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/misc/requirements/requirements-mypy.txt
+commands =
+    #{envpython} -m mypy --ignore-missing-imports --allow-untyped-decorators --allow-subclassing-any --strict src
+    {envpython} -m mypy qutebrowser