fix pytest issue347: slaves running on top of Python3.2

will set PYTHONDONTWRITEYBTECODE to 1 to avoid import concurrency
bugs.

CHANGELOG

@@ -9,6 +9,10 @@
 - fix pytest issue41: re-run tests on all file changes, not just
   randomly select ones like .py/.c.
 
+- fix pytest issue347: slaves running on top of Python3.2 
+  will set PYTHONDONTWRITEYBTECODE to 1 to avoid import concurrency
+  bugs.
+
 1.8
 -------------------------
 

xdist/remote.py

@@ -125,6 +125,10 @@ def remote_initconfig(option_dict, args):
 
 
 if __name__ == '__channelexec__':
+    # python3.2 is not concurrent import safe, so let's play it safe
+    # https://bitbucket.org/hpk42/pytest/issue/347/pytest-xdist-and-python-32
+    if sys.version_info[:2] == (3,2):
+        os.environ["PYTHONDONTWRITEBYTECODE"] = 1
     slaveinput,args,option_dict = channel.receive()
     importpath = os.getcwd()
     sys.path.insert(0, importpath) # XXX only for remote situations