From 6d17dccac8e9806950def1848b648537eecf7d01 Mon Sep 17 00:00:00 2001
From: Richard Eisenberg <rae@richarde.dev>
Date: Tue, 20 Dec 2022 09:10:49 -0500
Subject: [PATCH] Document user-facing label

---
 README.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index b18e5ffc..ef74cd06 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,9 @@ $ nix build -f ./. --arg ghc "(import ghc-from-source.nix {ghc-path=$GHC_TREE;})
 
 GHC's GitLab instance uses GitLab CI and the `head-hackage-ci` tool (contained
 in the `ci/` directory) to test the `head.hackage` patchset against GHC releases
-and snapshots.
+and snapshots. It can also compile head.hackage using a patch to GHC; just add
+the `user-facing` label to a GHC MR, and the existing CI infrastructure will
+invoke head.hackage.
 
 To run a similar build locally start by downloading and installing a binary
 distribution appropriate for your distribution and then call the `run-ci` script:
-- 
GitLab