From 9887abd0372ea1fc95dac62c68a52e19eb582ccc Mon Sep 17 00:00:00 2001
From: Mike Gerwitz <mike.gerwitz@ryansg.com>
Date: Wed, 14 Jun 2023 13:03:21 -0400
Subject: [PATCH] tamer: nir::air: Include mention of .experimental file in
 TODO help

The previous commit introduced support for a `.experimental` file to tigger
`xmlo-experimental`.  This modifies the error message for unsupported
features to make mention of it to help to the user track down the problem.

DEV-13162
---
 tamer/src/nir/air.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tamer/src/nir/air.rs b/tamer/src/nir/air.rs
index a86f9bf4..4b7a710f 100644
--- a/tamer/src/nir/air.rs
+++ b/tamer/src/nir/air.rs
@@ -398,6 +398,10 @@ impl Diagnostic for NirToAirError {
                         are you unintentionally using the `--emit xmlo-experimental` \
                         command line option?"
                 ),
+                tok.span().help(
+                    "this package may also have a sibling `.experimental` file \
+                        that triggers `xmlo-experimental`"
+                ),
             ],
 
             MatchSubjectExpected(ospan, given) => vec![