Dune_rpc_private.ConvSourceBidirectional parsing of canonical s-expressions
type error = | Parse_error of {message : string;payload : (string * Stdune.Sexp.t) list;}| Version_error of {since : int * int;until : (int * int) option;message : string;payload : (string * Stdune.Sexp.t) list;}conversion from/to