trying out static type checks with pyre

Signed-off-by: Oleg Höfling <oleg.hoefling@gmail.com>

src/devpi_ext/__init__.py

@@ -1,3 +1,6 @@
+# pyre-strict
+
+
 __all__ = ['__version__']
 
 

src/devpi_ext/login.py

@@ -1,3 +1,5 @@
+# pyre-strict
+
 """
 Defines custom hook for password search. This tries to get credentials
 from .pypirc file. Will return nothing if the file is not present

tox.ini

@@ -29,11 +29,18 @@ deps =
     black
     flake8
     mypy
+    pyre-check
     unify
 commands =
-    poetry run flake8 --max-line-length=88
-    poetry run black --check .
+    poetry install -v
+    poetry run flake8 --max-line-length=88 src/ tests/
+    poetry run black --check src tests
     poetry run unify --quote "'" --check-only --recursive .
-    poetry run mypy -p devpi_ext --strict --ignore-missing-imports
+    # pluggy doesn't have stubs, generate them to satisfy mypy/pyre
+    poetry run stubgen -p pluggy --include-private --output stubs
+    # stubgen doesn't insert return types for untyped functions
+    poetry run bash -c "grep -lnr 'def .*(.*): ...' stubs/ | xargs -n1 sed -i 's/def \(.*\)(\(.*\)): .../def \1(\2) -> Any: .../g'"
+    poetry run mypy -p devpi_ext --strict
+    poetry run pyre --source-directory src --source-directory stubs --noninteractive check
 setenv =
-    MYPYPATH = src
+    MYPYPATH = src:stubs