diff --git a/pkgs/tools/text/diffutils/default.nix b/pkgs/tools/text/diffutils/default.nix
index aa42eeaf0b9f..a6c90629445a 100644
--- a/pkgs/tools/text/diffutils/default.nix
+++ b/pkgs/tools/text/diffutils/default.nix
@@ -44,8 +44,14 @@ stdenv.mkDerivation rec {
 
   # Disable stack-related gnulib tests on x86_64-darwin because they have problems running under
   # Rosetta 2: test-c-stack hangs, test-sigsegv-catch-stackoverflow and test-sigaction fail.
+  # Disable all gnulib tests when building on Darwin due to test-nl_langinfo-mt failure
+  # known by upstream https://www.mail-archive.com/bug-gnulib@gnu.org/msg50806.html
   postPatch =
-    if
+    if stdenv.buildPlatform.isDarwin then
+      ''
+        sed -i 's:gnulib-tests::g' Makefile.in
+      ''
+    else if
       ((stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) || (stdenv.hostPlatform.isAarch32))
     then
       ''