you must use custom python and not systemwide python here

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39212 20353a03-c40f-0410-a6d1-a30d3c3de9de

buildout/README.txt

@@ -100,11 +100,11 @@ parts =
 software_home = /home/MYUSER/erp5.buildout
 ^D
 $ ~/erp5.buildout/bin/python2.4 bootstrap/bootstrap.py -c my_instances.cfg
-$ python -S bin/buildout -c my_instances.cfg
+$ ~/erp5.buildout/bin/python2.4 -S bin/buildout -c my_instances.cfg
 $ var/bin/supervisord # it will start supervisor and configured software
 $ $EDITOR my_instances.cfg
 # add "runUnitTest" and "development-site" to parts
-$ python -S bin/buildout -c my_instances.cfg
+$ ~/erp5.buildout/bin/python2.4 -S bin/buildout -c my_instances.cfg
 
 Fully configured development instance will be available in var/development-site.