`val get_env_default : string -> string -> string`
`val show_version : bool Stdlib.ref`
`val dry_run : bool Stdlib.ref`
`val verbose : bool Stdlib.ref`
`val cache_dir : string Stdlib.ref`
`val cache_file : string Stdlib.ref`
`val use_cache : bool Stdlib.ref`
`val use_benrc : bool Stdlib.ref`
`val media_dir : string Stdlib.ref`
`val mirror_binaries : string Stdlib.ref`
`val mirror_sources : string Stdlib.ref`
`val mirror : string Stdlib.ref`
`val suite : string Stdlib.ref`
`val areas : string list Stdlib.ref`
`val preferred_compression_format : Ben.Compression.t Stdlib.ref`
`val quiet : bool Stdlib.ref`
`val update : bool Stdlib.ref`
`val get_config : 'a Ben.Core.StringMap.t -> Ben.Core.StringMap.key -> 'a`
`val set_cache_file : string -> unit`
`val get_cache_file : unit -> string`
`val progress : ('a, Stdlib.out_channel, unit, unit) Stdlib.format4 -> 'a`
`val debian_architectures : string list Stdlib.ref`
`val ignored_architectures : string list Stdlib.ref`
`val archs_list : unit -> string list`