Molinillo::Resolver::Resolution::Conflict(R, S)
A conflict that the resolution process encountered @attr [Object] requirement the requirement that immediately led to the conflict @attr [{String,Nil=>[Object]}] requirements the requirements that caused the conflict @attr [Object, nil] existing the existing spec that was in conflict with the {#possibility} @attr [Object] possibility_set the set of specs that was unable to be activated due to a conflict. @attr [Object] locked_requirement the relevant locking requirement. @attr [Array<Array>] requirement_trees the different requirement trees that led to every requirement for the conflicting name. @attr [{String=>Object}] activated_by_name the already-activated specs. @attr [Object] underlying_error an error that has occurred during resolution, and will be raised at the end of it if no resolution is found.