Use patched buildout.

Component itself does not work with original buildout, as
_profile_base_location_ functionality is required.

component/xtrabackup/buildout.cfg

 # xtrabackup: hot backup utility for MySQL
 # http://www.percona.com/
-
+# Depends on SlapOS patched buildout for _profile_base_location_ functionality
 [buildout]
 extends =
   ../autoconf/buildout.cfg
@@ -15,6 +15,11 @@ extends =
 parts =
   xtrabackup
 
+find-links =
+    http://www.nexedi.org/static/packages/source/slapos.buildout/
+
+versions = versions
+
 [xtrabackup-build-patch-download]
 recipe = hexagonit.recipe.download
 url = ${:_profile_base_location_}/${:filename}
@@ -46,3 +51,7 @@ environment =
   PATH=${autoconf:location}/bin:${automake-1.11:location}/bin:${libtool:location}/bin:${flex:location}/bin:%(PATH)s:${bison:location}/bin
 make-options =
   -j1
+
+[versions]
+# Use SlapOS patched zc.buildout
+zc.buildout = 1.5.3-dev-SlapOS-001