From 5c4b20303207f3c808bdefaa3ff16f3165f748ca Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Mon, 30 Jul 2018 19:36:14 +0200
Subject: [PATCH] hledger-lib: patch code to work around a regression in
 version 0.10

https://github.com/simonmichael/hledger/issues/852
---
 pkgs/development/haskell-modules/configuration-common.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 3c8f94860b4..8c1c2fac250 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -972,6 +972,13 @@ self: super: {
     sha256 = "0i889zs46wn09d7iqdy99201zaqxb175cfs8jz2zi3mv4ywx3a0l";
   });
 
+  # https://github.com/simonmichael/hledger/issues/852
+  hledger-lib = appendPatch super.hledger-lib (pkgs.fetchpatch {
+    url = "https://github.com/simonmichael/hledger/commit/007b9f8caaf699852511634752a7d7c86f6adc67.patch";
+    sha256 = "1lfp29mi1qyrcr9nfjigbyric0xb9n4ann5w6sr0g5sanr4maqs2";
+    stripLen = 1;
+  });
+
   # Copy hledger man pages from data directory into the proper place. This code
   # should be moved into the cabal2nix generator.
   hledger = overrideCabal super.hledger (drv: {