slaprunner : Try to install libxslt before lxml egg

software/slaprunner/software.cfg

@@ -4,6 +4,7 @@ extends =
 
 extensions =
   slapos.rebootstrap
+  slapos.zcbworkarounds
 
 parts =
   eggs
@@ -16,8 +17,6 @@ find-links +=
 versions = versions
 
 [template]
-# Force installation of lxml egg properly before instqlling template
-dummy = ${eggs:eggs}
 recipe = slapos.cookbook:template
 url = ${:_profile_base_location_}/instance.cfg
 output = ${buildout:directory}/template.cfg

stack/flask.cfg

 # Stack for Flask microframework: http://flask.pocoo.org/
 [buildout]
-extensions =
-  slapos.zcbworkarounds
 
 extends =
   ../component/python-2.7/buildout.cfg
   ../component/lxml-python/buildout.cfg
-  
-# Use only quite well working sites.
-allow-hosts =
-  *.nexedi.org
-  *.python.org
-  *.sourceforge.net
-  dist.repoze.org
-  effbot.org
-  github.com
-  peak.telecommunity.com
-  psutil.googlecode.com
-  www.dabeaz.com
 
 parts =
-  libxslt
   eggs
 
 # Unzip, as Flask can have a lot of troubles with zipped eggs