bash output of gem list

[12:49][pius@phoenix-2:~/q/y]$ gem list | grep dm-is-list
dm-is-list (0.9.6)

dependencies.rb

# dependencies are generated using a strict version, don't forget to edit the dependency versions when upgrading.
merb_gems_version = "0.9.10"
dm_gems_version   = "0.9.6"

# For more information about each component, please read http://wiki.merbivore.com/faqs/merb_components
dependency "merb-action-args", merb_gems_version
dependency "merb-assets", merb_gems_version  
dependency "merb-cache", merb_gems_version   
dependency "merb-helpers", merb_gems_version 
dependency "merb-mailer", merb_gems_version  
dependency "merb-slices", merb_gems_version  
dependency "merb-auth-core", merb_gems_version
dependency "merb-auth-more", merb_gems_version
dependency "merb-auth-slice-password", merb_gems_version
dependency "merb-param-protection", merb_gems_version
dependency "merb-exceptions", merb_gems_version
 
dependency "dm-core", dm_gems_version         
dependency "dm-aggregates", dm_gems_version   
dependency "dm-migrations", dm_gems_version   
dependency "dm-timestamps", dm_gems_version   
dependency "dm-types", dm_gems_version        
dependency "dm-validations", dm_gems_version
dependency "dm-is-list", dm_gems_version

failure mode of dm-is-list in Merb RC2

[12:53][pius@phoenix-2:~/q/y]$ merb
Loading init file from /Users/pius/q/y/config/init.rb
Loading /Users/pius/q/y/config/environments/development.rb
 ~ Loaded DEVELOPMENT Environment...
 ~ 
 ~ FATAL: The file dm-is-list was not found
 ~