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