From a0ac8c878465e34ca4576ca077ed78ebf3633387 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Wed, 18 Sep 2019 15:13:27 +0000
Subject: [PATCH] haskell-xmonad-contrib: use the latest version when building
 with ghc-8.8.x

---
 pkgs/development/haskell-modules/configuration-ghc-8.8.x.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.8.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.8.x.nix
index 3db1f35bf112..0e9097db5ce3 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.8.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.8.x.nix
@@ -114,6 +114,7 @@ self: super: {
     sha256 = "1dsqmx0sw62x4glh43c0sbizd2y00v5xybiqadn96v6pmfrap5cp";
   });
   lens = self.lens_4_18_1;
+  xmonad-contrib = self.xmonad-contrib_0_16;
   polyparse = appendPatch (doJailbreak super.polyparse) (pkgs.fetchpatch {
     url = "https://raw.githubusercontent.com/hvr/head.hackage/master/patches/polyparse-1.12.1.patch";
     sha256 = "01b2gnsq0x4fd9na8zpk6pajym55mbz64hgzawlwxdw0y6681kr5";