1 files changed, 9 insertions, 5 deletions

diff --git a/ttrun/cmd.py b/ttrun/cmd.py
index a237b1b..b392277 100644
--- a/ttrun/cmd.py
+++ b/ttrun/cmd.py
@@ -16,6 +16,7 @@
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
 import argparse
+import os
 import subprocess
 import sys
 
@@ -35,11 +36,14 @@ def main():
     args = parse_arguments()
 
     if args.environment:
-        return subprocess.call([
-            '.tox/{environment}/bin/python'.format(
-                environment=args.environment),
-            '-m',
-            'testtools.run'] + args.tests)
+        envpath = '.tox/{environment}/bin'.format(environment=args.environment)
+        pyexe = '{envpath}/python'.format(envpath=envpath)
+        # Executables in the virtualenv need to be in the path
+        os.environ['PATH'] = '{envpath}:{path}'.format(
+            envpath=envpath, path=os.environ['PATH'])
+        return subprocess.Popen(
+            [pyexe, '-m', 'testtools.run'] + args.tests,
+            env=os.environ).wait()
     else:
         return testtools.run.main([sys.argv[0]] + args.tests, sys.stdout)