Fail if cookbook is not installed from local repo.

software/erp5testnode/software.cfg

@@ -25,6 +25,7 @@ parts =
   subversion
   zip
   git
+  checkrecipe
 
 # Separate from site eggs
 allowed-eggs-from-site-packages =
@@ -46,6 +47,12 @@ allow-hosts =
 develop =
   ${:parts-directory}/slapos.cookbook-repository
 
+[checkrecipe]
+recipe = plone.recipe.command
+stop-on-error = true
+update-command = ${:command}
+command = grep parts ${buildout:develop-eggs-directory}/slapos.cookbook.egg-link
+
 [slapos.cookbook-repository]
 recipe = plone.recipe.command
 stop-on-error = true