From 1cd80fc83c8ef688ef25a64a0580bd9ac20a243d Mon Sep 17 00:00:00 2001
From: Chris Dornan <chris@chrisdornan.com>
Date: Tue, 23 Jul 2019 19:02:56 +0100
Subject: [PATCH] ghc-lib-parser-8.8.0.20190723 (fixes #4731)

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index b5618e01..81b97a5b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4730,6 +4730,10 @@ packages:
         - lens-family < 2
         - lens-family-core < 2
 
+        # https://github.com/commercialhaskell/stackage/issues/4731
+        - ghc-lib-parser < 8.8.0.20190723
+        - ghc-lib        < 8.8.0.20190723
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of