Added version 15.0.1

var/spack/repos/builtin/packages/py-virtualenv/package.py

@@ -8,6 +8,7 @@ class PyVirtualenv(Package):
 
     version('1.11.6', 'f61cdd983d2c4e6aeabb70b1060d6f49')
     version('13.0.1', '1ffc011bde6667f0e37ecd976f4934db')
+    version('15.0.1', '28d76a0d9cbd5dc42046dd14e76a6ecc')
 
     extends('python')
     depends_on('py-setuptools')