No need to use the grid here...

buildout.cfg

@@ -3,16 +3,22 @@
 ; Mon 16 Apr 08:29:18 2012 CEST
 
 [buildout]
-parts = external tests python
+parts = environment external tests python
 develop = .
 eggs = bob
-       gridtk
        flandmark
 newest = false
 
+; Path to Bob's root - No need setting this if Bob is installed centrally
+bob = /idiap/group/torch5spro/nightlies/last/install/install/linux-x86_64-release
+
+[environment]
+recipe = collective.recipe.environment
+PKG_CONFIG_PATH = ${buildout:bob}/lib/pkgconfig
+
 [external]
 recipe = xbob.buildout:external
-egg-directories = /idiap/group/torch5spro/nightlies/last/install/linux-x86_64-release/lib
+egg-directories = ${buildout:bob}/lib
 
 [tests]
 recipe = xbob.buildout:nose