From 7963b444ca6a3d93ae05ef04cec4d31e55fa44d8 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 25 Dec 2020 20:14:42 +0100
Subject: [PATCH] haskell-ListLike: patch to fix the build with ghc-8.10.3

---
 .../haskell-modules/configuration-ghc-8.10.x.nix            | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.10.x.nix
index 60d3f4232464..8e53303e9feb 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.10.x.nix
@@ -83,6 +83,12 @@ self: super: {
     sha256 = "0rgzrq0513nlc1vw7nw4km4bcwn4ivxcgi33jly4a7n3c1r32v1f";
   });
 
+  # Version 4.7.2 is broken by the bytestring library shipped by ghc-8.10.3.
+  ListLike = appendPatch super.ListLike (pkgs.fetchpatch {
+    url = "https://gitlab.haskell.org/ghc/head.hackage/-/raw/master/patches/ListLike-4.7.2.patch";
+    sha256 = "1v392a74w0sxyn6x0bqixpmjbgla0i2b5hxzkcn1vaa3gaya7ag4";
+  });
+
   # hnix 0.9.0 does not provide an executable for ghc < 8.10, so define completions here for now.
   hnix = generateOptparseApplicativeCompletion "hnix"
     (overrideCabal super.hnix (drv: {