Raised when there are conflicting gem specs loaded
# File rubygems/errors.rb, line 84 def initialize(target, conflicts) @target = target @conflicts = conflicts @name = target.name reason = conflicts.map do |act, dependencies| "#{act.full_name} conflicts with #{dependencies.join(", ")}" end.join ", " # TODO: improve message by saying who activated `con` super("Unable to activate #{target.full_name}, because #{reason}") end