sig
val exists : Topkg.fpath -> bool Topkg.result
val must_exist : Topkg.fpath -> Topkg.fpath Topkg.result
val contents :
?dotfiles:bool ->
?rel:bool -> Topkg.fpath -> Topkg.fpath list Topkg.result
val current : unit -> Topkg.fpath Topkg.result
val set_current : Topkg.fpath -> unit Topkg.result
val with_current : Topkg.fpath -> ('a -> 'b) -> 'a -> 'b Topkg.result
end