From 446082b591c2e950cc2c793c3f5e2da15d821c5c Mon Sep 17 00:00:00 2001
From: Joe Kachmar <joseph.kachmar@gmail.com>
Date: Fri, 29 May 2020 02:01:55 +0000
Subject: [PATCH] Restricts ghc-source-gen < 0.4 (#5400)

---
 build-constraints.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index a993d839..f723bb55 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3534,7 +3534,7 @@ packages:
         - pier-core < 0
         - pier < 0
         - haskeline < 0.8 # https://github.com/commercialhaskell/stackage/issues/5269
-        - ghc-source-gen
+        - ghc-source-gen < 0.4 # https://github.com/commercialhaskell/stackage/issues/5400
 
     "Christof Schramm <christof.schramm@campus.lmu.de>":
         - mnist-idx