From d4a1e32a5d77ab1a8fa0e6b6ca77a644ff0a37bd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Thir=C3=A9?=
 <francois.thire@nomadic-labs.com>
Date: Tue, 23 Aug 2022 16:47:04 +0200
Subject: [PATCH] Protocol/SCORU: Track a compatibility issue with the DAL

---
 src/proto_alpha/lib_protocol/sc_rollup_PVM_sem.ml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/proto_alpha/lib_protocol/sc_rollup_PVM_sem.ml b/src/proto_alpha/lib_protocol/sc_rollup_PVM_sem.ml
index 61f7e01a9b9d..cc6a37cfacb6 100644
--- a/src/proto_alpha/lib_protocol/sc_rollup_PVM_sem.ml
+++ b/src/proto_alpha/lib_protocol/sc_rollup_PVM_sem.ml
@@ -24,6 +24,10 @@
 (*                                                                           *)
 (*****************************************************************************)
 
+(* FIXME: https://gitlab.com/tezos/tezos/-/issues/3649
+
+   This type cannot be extended in a retro-compatible way. It should
+   be put into a variant. *)
 type input = {
   inbox_level : Raw_level_repr.t;
   message_counter : Z.t;
-- 
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