ppx @@deriving on types throws off indententation of mutually recursive types.

[zenhack]

Test case:

module M = struct
  type a =
    | A
  [@@deriving sexp]
  and b =
    | C
end

Should stay as-is, but gets transformed into:

module M = struct
  type a =
    | A
  [@@deriving sexp]
and b =
  | C
end

Notes:

• Removing the deriving clause fixes the problem
• This only happens with and; a non-recursive type works correctly.

(Edit: this is with the default config)

[zenhack]

Ack, this seems to be fixed on 1.7, hadn't noticed there was a newer version. Sorry for the noise.