OpamPp.Op
val (-|) : ('a, 'b) t -> ('b, 'c) t -> ('a, 'c) t
Piping pps together: the left-hand pp is called first when parsing, last when printing
val (^+) : ('a, 'b) t -> ('a list, 'c) t -> ('a list, 'b * 'c) t
Combinator to parse lists to different types using nested pairs