test: repro #10301

[anmonteiro]

reproes #10301

[anmonteiro]

at least for the ocamllex case it's easy to see why the target is expected to be in the same dir as the dune file:

dune/src/dune_rules/stanzas/rule_conf.ml

Lines 215 to 220 in 2a4a5bf

	let dst = name ^ ".ml" in
	{ targets =
	(* CR-someday aalekseyev: want to use [multiplicity = One] here, but
	can't because this is might get parsed with old dune syntax where
	[multiplicity = One] is not supported. *)
	Static { targets = [ S.make_text loc dst, File ]; multiplicity = Multiple }

[anmonteiro]

and for menhir:

dune/src/dune_rules/menhir/menhir_rules.ml

Lines 100 to 103 in 2a4a5bf

	let targets m ~cmly =
	let base = [ m ^ ".ml"; m ^ ".mli" ] in
	List.map ~f:(Path.Build.relative dir) (if cmly then (m ^ ".cmly") :: base else base)
	;;

[emillon]

thanks for the repro. 2 remarks:

• can you add a pointer to Cannot befriend Menhir and ocamllex with include_subdirs unqualified #10301?
• if these are 2 separate issues, can you create 2 separate tests?
  thanks!

[anmonteiro]

@emillon changed this to be just about menhir, and renamed the test case to point to #10301.

[anmonteiro]

ping @emillon