From 8ba79e5af949b94e7fa6a46ba08533533a12153d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Sat, 2 Feb 2019 11:56:04 +0100
Subject: [PATCH] haskellPackages.servant: fixup build after 86f646da

---
 pkgs/development/haskell-modules/configuration-common.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 3ff96bf25449..9ed7a715b16a 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -747,6 +747,10 @@ self: super: {
           rev = "v${ver}";
           sha256 = "0kqglih3rv12nmkzxvalhfaaafk4b2irvv9x5xmc48i1ns71y23l";
         }}/doc";
+        # Needed after sphinx 1.7.9 -> 1.8.3
+        postPatch = ''
+          substituteInPlace conf.py --replace "'.md': CommonMarkParser," ""
+        '';
         nativeBuildInputs = with pkgs.buildPackages.pythonPackages; [ sphinx recommonmark sphinx_rtd_theme ];
         makeFlags = "html";
         installPhase = ''