# File lib/buildr/packaging/artifact_namespace.rb, line 577 def ns(name, *uses, &block) name = name.to_sym sub = registry[name] if sub raise TypeError.new("#{name} is not a sub namespace of #{self}") unless sub.kind_of?(ArtifactNamespace) else sub = ArtifactNamespace.new("#{self.name}.#{name}") sub.parent = self registry[name] = sub end sub.use(*uses) yield sub if block_given? sub end