Adding extra info on how to get the python-lxml extension.

diff --git a/share/extensions/inkex.py b/share/extensions/inkex.py
index 61cbacea8af8a64a0be0f6b4d3718a3f22da9972..5f12c891703669d373808d3be7d59b45bbae8aea 100755 (executable)
--- a/share/extensions/inkex.py
+++ b/share/extensions/inkex.py
@@ -56,7 +56,7 @@ def unittouu(string):
 try:
     from lxml import etree
 except:
-    sys.exit('The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from <http://cheeseshop.python.org/pypi/lxml/>.')
+    sys.exit('The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from <http://cheeseshop.python.org/pypi/lxml/>, or install it through your package manager by a command like: sudo apt-get install python-lxml')
 
 def debug(what):
     sys.stderr.write(str(what) + "\n")