websockify is needed only for kvm software, not stack.

software/kvm/software.cfg

@@ -2,6 +2,32 @@
 extends =
   ../../stack/kvm.cfg
 
+develop =
+  ${:parts-directory}/websockify
+
+parts +=
+  check-local-eggs
+
+[eggs]
+dummy =
+  ${websockify:location}
+eggs +=
+  websockify
+
+[websockify]
+recipe = plone.recipe.command
+stop-on-error = true
+location = ${buildout:parts-directory}/${:_buildout_section_name_}
+command = ${git:location}/bin/git clone --quiet https://github.com/desaintmartin/websockify.git ${:location}
+update-command = cd ${:location} && ${git:location}/bin/git pull --quiet
+
+[check-local-eggs]
+recipe = plone.recipe.command
+stop-on-error = true
+update-command = ${:command}
+command = grep parts ${buildout:develop-eggs-directory}/websockify.egg-link
+depends = ${eggs:dummy}
+
 [template]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance.cfg

stack/kvm.cfg

 [buildout]
-develop = /root/websockify
 extends =
   shacache-client.cfg
   ../component/python-2.7/buildout.cfg
@@ -34,7 +33,6 @@ parts =
   template
   kvm
   eggs
-  check-local-eggs
 
 find-links +=
   http://www.nexedi.org/static/packages/source/slapos.buildout/
@@ -55,23 +53,6 @@ allow-hosts =
   www.dabeaz.com
   www.owlfish.com
 
-develop =
-  ${:parts-directory}/websockify
-
-[websockify]
-recipe = plone.recipe.command
-stop-on-error = true
-location = ${buildout:parts-directory}/${:_buildout_section_name_}
-command = ${git:location}/bin/git clone --quiet https://github.com/desaintmartin/websockify.git ${:location}
-update-command = cd ${:location} && ${git:location}/bin/git pull --quiet
-
-[check-local-eggs]
-recipe = plone.recipe.command
-stop-on-error = true
-update-command = ${:command}
-command = grep parts ${buildout:develop-eggs-directory}/websockify.egg-link
-depends = ${eggs:dummy}
-
 [gpg-error]
 recipe = hexagonit.recipe.cmmi
 url = ftp://ftp.gnupg.org/gcrypt/libgpg-error/libgpg-error-1.10.tar.gz
@@ -131,11 +112,8 @@ update-command =
  cd ${:location} && ${git:location}/bin/git pull --quiet origin master
 
 [eggs]
-dummy =
-  ${websockify:location}
 python = python2.7
 recipe = z3c.recipe.scripts
 eggs =
   ${lxml-python:egg}
   slapos.cookbook
-  websockify