- look_for_coercion:(
- NCic.metasenv -> NCic.substitution -> NCic.context ->
- (* inferred type, expected type *)
- NCic.term -> NCic.term ->
- (* enriched metasenv, new term, its type, metavriable to
- * be unified with the old term *)
- (NCic.metasenv * NCic.term * NCic.term * NCic.term) list
- ) ->