Switch.Overlayval dir : t -> OpamTypes.switch -> OpamTypes.dirnameSwitch metadata overlay (over the global metadata): $meta/overlay/
val package : t -> OpamTypes.switch -> OpamTypes.name -> OpamTypes.dirnameSwitch metadata overlay (over the global metadata): $meta/overlay/$name.$version
val opam : t -> OpamTypes.switch -> OpamTypes.name -> OpamFile.OPAM.t OpamFile.tOPAM overlay: $meta/overlay/$name.$version/opam
val tmp_opam : t -> OpamTypes.switch -> OpamTypes.name -> OpamFile.OPAM.t OpamFile.tOPAM temp overlay (for user editing): $meta/overlay/$name.$version/opam_
val url : t -> OpamTypes.switch -> OpamTypes.name -> OpamFile.URL.t OpamFile.tURL overlay: $meta/overlay/$name.$version/url
val descr : t -> OpamTypes.switch -> OpamTypes.name -> OpamFile.Descr.t OpamFile.tDescr orverlay
val files : t -> OpamTypes.switch -> OpamTypes.name -> OpamTypes.dirnameFiles overlay