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-rw-r--r--kernel/modops.mli3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/modops.mli b/kernel/modops.mli
index 0acd09fb12..119ce2b359 100644
--- a/kernel/modops.mli
+++ b/kernel/modops.mli
@@ -57,6 +57,8 @@ val add_linked_module : module_body -> link_info -> env -> env
(** same, for a module type *)
val add_module_type : ModPath.t -> module_type_body -> env -> env
+val add_retroknowledge : module_implementation module_retroknowledge -> env -> env
+
(** {6 Strengthening } *)
val strengthen : module_type_body -> ModPath.t -> module_type_body
@@ -109,6 +111,7 @@ type signature_mismatch_error =
| IncompatibleUniverses of Univ.univ_inconsistency
| IncompatiblePolymorphism of env * types * types
| IncompatibleConstraints of { got : Univ.AUContext.t; expect : Univ.AUContext.t }
+ | IncompatibleVariance
type module_typing_error =
| SignatureMismatch of