module Error: sig
.. end
val to_string : string * string *
[< `Database of Ketrew.Persistent_data.Error.database
| `IO of
[< `Exn of exn
| `File_exists of string
| `Read_file_exn of string * exn
| `Write_file_exn of string * exn
| `Wrong_path of string ]
| `System of
[< `Copy of string
| `File_info of string
| `File_tree of string
| `List_directory of string
| `Make_directory of string
| `Make_symlink of string * string
| `Move of string
| `Remove of string ] *
[< `Already_exists
| `Exn of exn
| `File_exists of string
| `File_not_found of string
| `IO of
[< `Exn of exn
| `File_exists of string
| `Read_file_exn of string * exn
| `Write_file_exn of string * exn
| `Wrong_path of string ]
| `Not_a_directory of string
| `Wrong_access_rights of int
| `Wrong_file_kind of string * Pvem_lwt_unix.System.file_info
| `Wrong_path of string ]
| `Target of [< `Deserilization of string ]
| `Unknown_uri_scheme of string * string option
| `Weird_file of string ] ->
string