Check that recipe is really available.

software/sanef/software.cfg

@@ -12,6 +12,7 @@ parts +=
   products-upgrade
   bt5-bef
   bt5-repository
+  checkrecipe
 
 [eggs]
 # Just so buildout executes [bef_erp5-recipe] before [eggs], as
@@ -34,6 +35,12 @@ extra-paths +=
 url = ${:_profile_base_location_}/instance.cfg
 md5sum = 9487896be21080323462a5f289db6c5e
 
+[checkrecipe]
+recipe = plone.recipe.command
+stop-on-error = true
+update-command = ${:command}
+command = grep parts ${buildout:develop-eggs-directory}/slapos.cookbook.egg-link
+
 [instance-recipe]
 egg = slapos.cookbook
 module = bef_erp5