gistfile1.txt

Easy patch to tell us which module is asking for a stale CORE.setting:

bri@atlas:~/git/rakudobrew/git_reference/MoarVM$ perl6 -MURI -e '1;'
===SORRY!===
Missing or wrong version of dependency 'src/gen/m-CORE.setting' (from 'lib/IETF/RFC_Grammar/URI.pm')
                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

\o/

OK, well it wasn't so easy for me not knowing any guts, but I'm surprised nobody has done it yet.

Of course now with S11 we also may need a way to get stale code out of the compuintrepo db, right?

I assume it is safe to follow root.sc without a NULL check because other code does it.

Not spectested:

diff --git a/src/6model/serialization.c b/src/6model/serialization.c
index db25b94..73d99f7 100644
--- a/src/6model/serialization.c
+++ b/src/6model/serialization.c
@@ -1812,8 +1812,9 @@ static void resolve_dependencies(MVMThreadContext *tc, MVMSerializationReader *r
             MVMString *desc = read_string_from_heap(tc, reader, read_int32(table_pos, 4));
             if (!desc) desc = handle;
             fail_deserialize(tc, reader,
-                "Missing or wrong version of dependency '%s'",
-                MVM_string_ascii_encode(tc, desc, NULL));
+                "Missing or wrong version of dependency '%s' (from '%s')",
+                MVM_string_ascii_encode(tc, desc, NULL),
+                MVM_string_ascii_encode(tc, reader->root.sc->body->description, NULL));
         }
         reader->root.dependent_scs[i] = sc;
         table_pos += 8;