[cbjchen,r=hopem]

Install python-lesscpy if using Icehouse release and offline-compression is
switched off ('no' or 'False').

Closes-Bug: 1311379

Makefile

@@ -5,7 +5,7 @@ lint:
 	@flake8 --exclude hooks/charmhelpers hooks unit_tests
 	@charm proof
 
-test:
+unit_test:
 	@echo Starting tests...
 	@$(PYTHON) /usr/bin/nosetests --nologcapture unit_tests
 

hooks/horizon_hooks.py

@@ -75,6 +75,11 @@ def config_changed():
     else:
         localhost = 'localhost'
 
+    if (os_release('openstack-dashboard') == 'icehouse' and
+            config('offline-compression') in ['no', 'False']):
+        apt_install(filter_installed_packages(['python-lesscpy']),
+                    fatal=True)
+
     # Ensure default role changes are propagated to keystone
     for relid in relation_ids('identity-service'):
         keystone_joined(relid)