From 67959521490d7308084a9d8e9300125f16a5697a Mon Sep 17 00:00:00 2001
From: Michael Raskin <7c6f434c@mail.ru>
Date: Wed, 7 Sep 2016 18:06:41 +0200
Subject: [PATCH] libchop: a hack to work around broken guile path detection

---
 pkgs/development/libraries/libchop/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/libchop/default.nix b/pkgs/development/libraries/libchop/default.nix
index e57d1f29606a..7ff992ccc554 100644
--- a/pkgs/development/libraries/libchop/default.nix
+++ b/pkgs/development/libraries/libchop/default.nix
@@ -23,6 +23,10 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
+  preConfigure = ''
+    sed -re 's%@GUILE@%&/guile%' -i */Makefile.* Makefile.*
+  '';
+
   meta = {
     description = "Tools & library for data backup and distributed storage";