Bug#1039739: ppx-expect: FTBFS: Error: Unbound module Sexplib0.Sexp_conv_record

[Sebastian Ramacher <sramacher@debian.org>]

Source: ppx-expect
Version: 0.16.0-1
Severity: serious
Tags: ftbfs
Justification: fails to build from source

https://buildd.debian.org/status/fetch.php?pkg=ppx-expect&arch=amd64&ver=0.16.0-1%2Bb1&stamp=1687550064&raw=0

  ocamlc common/.expect_test_common.objs/byte/expect_test_common__File.{cmo,cmt} (exit 2)
(cd _build/default && /usr/bin/ocamlc.opt -w -40 -g -bin-annot -I common/.expect_test_common.objs/byte -I /usr/lib/ocaml/base -I /usr/lib/ocaml/base/base_internalhash_types -I /usr/lib/ocaml/base/caml -I /usr/lib/ocaml/base/shadow_stdlib -I /usr/lib/ocaml/sexplib0 -intf-suffix .ml -no-alias-deps -open Expect_test_common__ -o common/.expect_test_common.objs/byte/expect_test_common__File.cmo -c -impl common/file.ml)
File "common/file.ml", line 56, characters 9-49:
56 |          Sexplib0.Sexp_conv_record.record_of_sexp
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: Unbound module Sexplib0.Sexp_conv_record
Hint: Did you mean Sexp_conv_error?
    ocamlopt common/.expect_test_common.objs/native/expect_test_common__File.{cmx,o} (exit 2)
(cd _build/default && /usr/bin/ocamlopt.opt -w -40 -g -I common/.expect_test_common.objs/byte -I common/.expect_test_common.objs/native -I /usr/lib/ocaml/base -I /usr/lib/ocaml/base/base_internalhash_types -I /usr/lib/ocaml/base/caml -I /usr/lib/ocaml/base/shadow_stdlib -I /usr/lib/ocaml/sexplib0 -intf-suffix .ml -no-alias-deps -open Expect_test_common__ -o common/.expect_test_common.objs/native/expect_test_common__File.cmx -c -impl common/file.ml)
File "common/file.ml", line 56, characters 9-49:
56 |          Sexplib0.Sexp_conv_record.record_of_sexp
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: Unbound module Sexplib0.Sexp_conv_record
Hint: Did you mean Sexp_conv_error?
make[1]: *** [debian/rules:9: override_dh_auto_build] Error 1

Cheers
-- 
Sebastian Ramacher