From f87f5ae301c39e8adeed184d908bd9dd083de3f7 Mon Sep 17 00:00:00 2001
From: Robert Scott <code@humanleg.org.uk>
Date: Fri, 6 May 2022 00:55:53 +0100
Subject: [PATCH] libxml2: re-enable tests for darwin

appears the lack of sandbox on most darwin machines allows the
tests to accidentally find /usr/lib/libxml2.dylib, which
causes problems
---
 pkgs/development/libraries/libxml2/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/libxml2/default.nix b/pkgs/development/libraries/libxml2/default.nix
index 06c073c718ac..68607594b4ee 100644
--- a/pkgs/development/libraries/libxml2/default.nix
+++ b/pkgs/development/libraries/libxml2/default.nix
@@ -94,8 +94,10 @@ stdenv.mkDerivation rec {
 
   doCheck =
     (stdenv.hostPlatform == stdenv.buildPlatform) &&
-    !stdenv.isDarwin &&
     stdenv.hostPlatform.libc != "musl";
+  preCheck = lib.optional stdenv.isDarwin ''
+    export DYLD_LIBRARY_PATH="$PWD/.libs:$DYLD_LIBRARY_PATH"
+  '';
 
   preConfigure = lib.optionalString (lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11") ''
     MACOSX_DEPLOYMENT_TARGET=10.16