From 986d96a355c41d39245368e43c5f1707047d4908 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20=C5=BDlender?= <pub.git@zlender.si>
Date: Sat, 25 Nov 2023 20:48:00 +0100
Subject: [PATCH] mcrypt: fix build on darwin

---
 pkgs/tools/misc/mcrypt/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/tools/misc/mcrypt/default.nix b/pkgs/tools/misc/mcrypt/default.nix
index ef5b8e56fa0a..c5013eb46a04 100644
--- a/pkgs/tools/misc/mcrypt/default.nix
+++ b/pkgs/tools/misc/mcrypt/default.nix
@@ -19,6 +19,10 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libmcrypt libmhash ];
 
+  env = lib.optionalAttrs stdenv.cc.isClang {
+    NIX_CFLAGS_COMPILE = "-Wno-implicit-function-declaration";
+  };
+
   meta = {
     description = "Replacement for old UNIX crypt(1)";
     longDescription = ''