From 6c78d62e597c07e42d6a7a53f526f3fa41fdf34f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20L=C3=A4ndle?=
 <969523+alaendle@users.noreply.github.com>
Date: Thu, 15 Jan 2026 19:25:42 +0100
Subject: [PATCH] Upper bound for `happy` (#7930).

---
 build-constraints.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5bcf4934..b91100f4 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7877,6 +7877,10 @@ packages:
         - crypton-x509-validation < 1.8.0
         - quic < 0.2.22
         - tls < 2.2.0
+
+        # https://github.com/commercialhaskell/stackage/issues/7930
+        - happy < 2.2
+        - happy-lib < 2.2
     # end of Stackage upper bounds
 # end of packages