xxx -boost +dummy=icu:pole:cryptopp

component/onlyoffice-core/buildout.cfg

 [buildout]
 extends =
-  ../boost-lib/buildout.cfg
   ../icu/buildout.cfg
   ../pole/buildout.cfg
   ../cryptopp/buildout.cfg
@@ -9,13 +8,13 @@ extends =
 # for qmake
   ../qt/buildout.cfg
 parts +=
-  boost-lib
   pole
   icu4c-55-1
   cryptopp
   onlyoffice-core
 
 [onlyoffice-core]
+dummy = ${pole:location}:${icu:location}:${cryptopp:location}
 # XXX please, put the third party component in slapos !
 #     boost, cef, icu, v8 and pole (is there others ??? XXX TRISTAN XXX)
 recipe = slapos.recipe.cmmi