Switch.DefaultFFuctorised version of Default, for replicating a switch's layout in non-switch contexts
val lib : t -> L.ctx -> OpamTypes.name -> OpamTypes.dirnameval lib_dir : t -> L.ctx -> OpamTypes.dirnameval stublibs : t -> L.ctx -> OpamTypes.dirnameval toplevel : t -> L.ctx -> OpamTypes.dirnameval doc : t -> L.ctx -> OpamTypes.name -> OpamTypes.dirnameval doc_dir : t -> L.ctx -> OpamTypes.dirnameval etc_dir : t -> L.ctx -> OpamTypes.dirnameval etc : t -> L.ctx -> OpamTypes.name -> OpamTypes.dirnameval man_dir : ?num:string -> t -> L.ctx -> OpamTypes.dirnameval bin : t -> L.ctx -> OpamTypes.dirnameval sbin : t -> L.ctx -> OpamTypes.dirname