Don't run mypy on pypy because it can't be installed

See python/typed_ast#111 for more.

developer_requirements.txt

@@ -10,7 +10,7 @@ twine
 coverage
 codecov
 python-dateutil
-mypy; python_version >= '3.5'
+mypy; python_version >= '3.5' and implementation_name != "pypy"
 
 # codec libraries (snappy is intentionally left off this list as it requires other system libraries to be installed and is non-trivial)
 # Also don't install on windows for similar reasons

run-tests.sh

@@ -13,11 +13,19 @@ echo "running flake8"
 flake8 fastavro tests
 flake8 --config=.flake8.cython fastavro
 
-if [[ "$(python --version)" =~ "Python 3" ]]; then
+
+RUN_MYPY=$(python -c `import sys
+if sys.version_info[0] >= 3 and sys.implementation.name != "pypy":
+    sys.stdout.write("yes")
+else:
+    sys.stdout.write("no")
+`)
+
+if [[ "$RUN_MYPY" -eq "yes" ]]; then
     echo "running mypy"
     mypy ./fastavro
 else
-    echo "skipping mypy in Python 2"
+    echo "skipping mypy"
 fi
 
 check-manifest

setup.py

@@ -56,7 +56,7 @@ def version():
     setup_requires += cpython_requires
 
 tests_require = ['pytest', 'flake8', 'check-manifest']
-if sys.version_info >= (3, 0):
+if sys.version_info >= (3, 0) and sys.implementation.name != "pypy":
     tests_require.append('mypy')
 
 setup(