deprec allows you to choose preferred services

gistfile1.rb

# deprec defines some generic recipes for common services
# including ruby interpreter, web, app and database servers
#
# They default to my current favourites which you can override
#  
# Service options
CHOICES_RUBY_VM   = [:mri, :ree]
CHOICES_WEBSERVER = [:apache, :none]
CHOICES_APPSERVER = [:passenger, :none]
CHOICES_DATABASE  = [:mysql, :postgresql, :sqlite, :none]
# 
# Service defaults
set :ruby_vm_type,    :mri
set :web_server_type, :apache
set :app_server_type, :passenger
set :db_server_type,  :mysql