Only depend on mypy.api

.travis.yml

@@ -3,7 +3,6 @@
 sudo: false
 language: python
 python:
-  - "3.3"
   - "3.4"
   - "3.5"
   - "3.6"

pytest_mypy.py

@@ -5,7 +5,7 @@
     [ ] Proper docs
 """
 import pytest
-import mypy.main
+import mypy.api
 
 
 def pytest_addoption(parser):
@@ -36,9 +36,7 @@ def __init__(self, path, parent):
 
     def runtest(self):
         """
-        Run mypy on the given file. Because mypy's API is in flux
-        we emulate parts of mypy.main.main() here and leave it to
-        mypy to process it's options, for example.
+        Run mypy on the given file.
         """
         # TODO: This should be hidden behind a debug / verbose flag.
         print('Running mypy on', self.path)
@@ -52,16 +50,9 @@ def runtest(self):
             #       Or maybe we'll just rely on mypy.ini being present?
         ]
 
-        sources, options = mypy.main.process_options(mypy_argv)
-
-        try:
-            res = mypy.main.type_check_only(sources, None, options)
-            errors = res.errors
-        except mypy.errors.CompileError as e:
-            errors = e.messages
-
-        if errors:
-            raise MypyError('\n'.join(errors))
+        stdout, _, _ = mypy.api.run(args=mypy_argv)
+        if stdout:
+            raise MypyError(stdout)
 
     def repr_failure(self, excinfo):
         """

setup.py

@@ -23,15 +23,14 @@ def read(fname):
     description='Mypy static type checker plugin for Pytest',
     long_description=read('README.rst'),
     py_modules=['pytest_mypy'],
-    install_requires=['pytest>=2.9.2', 'mypy>=0.470'],
+    install_requires=['pytest>=2.9.2', 'mypy~=0.570'],
     classifiers=[
         'Development Status :: 4 - Beta',
         'Framework :: Pytest',
         'Intended Audience :: Developers',
         'Topic :: Software Development :: Testing',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',

tox.ini

@@ -1,6 +1,6 @@
 # For more information about tox, see https://tox.readthedocs.io/en/latest/
 [tox]
-envlist = py33,py34,py35,flake8
+envlist = py34,py35,py36,flake8
 
 [testenv]
 deps = pytest