val getenv : (string Ctypes_static.ocaml -> bytes Ctypes_static.ocaml -> Unsigned.size_t Ctypes_static.ptr -> int Luv_c_generated_functions.Non_blocking.return) Luv_c_generated_functions.Non_blocking.result
val setenv : (string Ctypes_static.ocaml -> string Ctypes_static.ocaml -> int Luv_c_generated_functions.Non_blocking.return) Luv_c_generated_functions.Non_blocking.result
val unsetenv : (string Ctypes_static.ocaml -> int Luv_c_generated_functions.Non_blocking.return) Luv_c_generated_functions.Non_blocking.result
val environ : ([ `Env_item ] Ctypes.structure Ctypes_static.ptr Ctypes_static.ptr -> int Ctypes_static.ptr -> int Luv_c_generated_functions.Non_blocking.return) Luv_c_generated_functions.Non_blocking.result
val free_environ : ([ `Env_item ] Ctypes.structure Ctypes_static.ptr -> int -> unit Luv_c_generated_functions.Non_blocking.return) Luv_c_generated_functions.Non_blocking.result