| Conv_error.No_variant_match ((msg, sexp)) -> Conv.of_sexp_error msg sexp
let sexp_of_hashset _of_a = Conv.sexp_of_hashtbl _of_a Conv.sexp_of_bool
| Conv_error.No_variant_match ((msg, sexp)) -> Conv.of_sexp_error msg sexp
let sexp_of_hashset _of_a = Conv.sexp_of_hashtbl _of_a Conv.sexp_of_bool