exception No_such_package of string * string
exception Package_loop of string
val init :
  ?env_ocamlpath:string ->
  ?env_ocamlfind_destdir:string ->
  ?env_ocamlfind_metadir:string ->
  ?env_ocamlfind_commands:string ->
  ?env_ocamlfind_ignore_dups_in:string ->
  ?env_camllib:string ->
  ?env_ldconf:string -> ?config:string -> ?toolchain:string -> unit -> unit
val init_manually :
  ?ocamlc_command:string ->
  ?ocamlopt_command:string ->
  ?ocamlcp_command:string ->
  ?ocamlmktop_command:string ->
  ?ocamldep_command:string ->
  ?ocamlbrowser_command:string ->
  ?ocamldoc_command:string ->
  ?ignore_dups_in:string ->
  ?stdlib:string ->
  ?ldconf:string ->
  install_dir:string ->
  meta_dir:string -> search_path:string list -> unit -> unit
val default_location : unit -> string
val meta_directory : unit -> string
val search_path : unit -> string list
val command :
  [ `ocamlbrowser
  | `ocamlc
  | `ocamlcp
  | `ocamldep
  | `ocamldoc
  | `ocamlmktop
  | `ocamlopt ] -> string
val ocaml_stdlib : unit -> string
val ocaml_ldconf : unit -> string
val package_directory : string -> string
val ignore_dups_in : unit -> string option
val package_property : string list -> string -> string -> string
val package_ancestors : string list -> string -> string list
val package_deep_ancestors : string list -> string list -> string list
val resolve_path : ?base:string -> string -> string
val list_packages : ?tab:int -> ?descr:bool -> out_channel -> unit