XXX local patch to enable shared cmmi

works on my machine

stack/slapos.cfg

@@ -4,6 +4,15 @@
 [buildout]
 python = python2.7
 
+# XXX `slapos node software` command should set this.
+download-cache = /srv/slapgrid/slappart8/srv/runner/project/000slapdir/cache/
+eggs-directory = /srv/slapgrid/slappart8/srv/runner/project/000slapdir/shared-eggs/
+#develop-eggs-directory = /srv/slapgrid/slappart8/srv/runner/project/000slapdir/shared-develop-eggs/
+abi-tag-eggs = true
+
+develop =
+  /srv/slapgrid/slappart8/srv/runner/project/slapos.recipe.cmmi/
+
 # Developers need to add explicitely this part in their software profile
 # parts = slapos-cookbook
 # Note that if you want a develop version of slapos-cookbook from a git