1 files changed, 3 insertions, 0 deletions
diff --git a/lib/spack/env/cc b/lib/spack/env/cc
index 9fa1a18573..0245e06531 100755
--- a/lib/spack/env/cc
+++ b/lib/spack/env/cc
@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 import sys
+if not sys.version_info[:2] >= (2,7):
+    sys.exit("Spack requires Python 2.7.  Version was %s." % sys.version_info)
+
 import os
 import re
 import subprocess