From 01fc00cc816d974056b788dc0014b4908869b3b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Sun, 19 Aug 2018 19:55:57 +0200
Subject: [PATCH] Revert "Merge #43190: libyaml: 0.1.7 -> 0.2.1"

This reverts commit 0f57d85522c8b80f2050a508fe50d9dcf68885a8, reversing
changes made to 65af43026a8d2c0e7f7c83f3b5f3d45655cf1bf2.

I'm missing human time to solve errors or verify that they're harmless...
---
 pkgs/development/libraries/libyaml/default.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/libyaml/default.nix b/pkgs/development/libraries/libyaml/default.nix
index 974fb9aceb6..45e15c82966 100644
--- a/pkgs/development/libraries/libyaml/default.nix
+++ b/pkgs/development/libraries/libyaml/default.nix
@@ -1,13 +1,14 @@
 { stdenv, fetchurl }:
 let
-  version = "0.2.1";
+  # 0.2.1 broke the tests of pythonPackages.pyyaml 3.13
+  version = "0.1.7";
 in
 stdenv.mkDerivation {
   name = "libyaml-${version}";
 
   src = fetchurl {
     url = "https://pyyaml.org/download/libyaml/yaml-${version}.tar.gz";
-    sha256 = "1karpcfgacgppa82wm2drcfn2kb6q2wqfykf5nrhy20sci2i2a3q";
+    sha256 = "0a87931cx5m14a1x8rbjix3nz7agrcgndf4h392vm62a4rby9240";
   };
 
   meta = with stdenv.lib; {