val create : dir:Jenga_lib.Path.t ‑> prog:string ‑> args:string list ‑> ignore_stderr:bool ‑> sandbox:Sandbox_kind.t ‑> t
val dir : t ‑> Jenga_lib.Path.t
val prog : t ‑> string
val args : t ‑> string list
val ignore_stderr : t ‑> bool
val sandbox : t ‑> Sandbox_kind.t