Put lxml.etree import in a try block.

At this point bcfg2 does not have a hard dependency on lxml. Putting this
import in a try block means setup.py will work for people without lxml.

1 files changed, 6 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 9eaa6f626..6e63976c1 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,12 @@ from distutils.core import Command
 from fnmatch import fnmatch
 from glob import glob
 import os.path
-import lxml.etree
+
+try:
+    import lxml.etree
+except ImportError:
+    pass
+
 
 class BuildDTDDoc (Command):
     """Build DTD documentation"""