Now ruby-datamapper is a "meta-gem" package like a meta-package in pkgsrc.
* Use lang/ruby/gem.mk instead of misc/rubygems/rubygem.mk.
* Add LICENSE.
* Ajust new ruby package's framework.
* Update dependency according to gemspec.
DataMapper is a Object Relational Mapper written in Ruby. The goal
is to create an ORM which is fast, thread-safe and feature-rich with
ActiveRecord-compatibility.