I am using REE
ruby 1.8.7 (2012-02-08 MBARI 8/0x6770 on patchlevel 358) [x86_64-linux], MBARI 0x6770, Ruby Enterprise Edition 2012.02
from http://rubyenterpriseedition.googlecode.com/files/ruby-enterprise_1.8.7-2012.02_amd64_debian6.0.deb
Is this REE compatible with passenger 3.0.17 , for more information visit Phusion Passenger Nginx module installer v3.0.17 issue on Debian 6.0.5 amd64 due to broken package
Yes. Phusion Passenger supports Ruby versions all the way back to 1.8.5.