From ffdad422d0dcb6f33cfe29f9adb25b0db35a1682 Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Fri, 17 Dec 2021 21:10:16 -0500
Subject: [PATCH] waifu2x-converter-cpp: fix darwin build

---
 pkgs/tools/graphics/waifu2x-converter-cpp/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix b/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix
index 8d8ae6e71e42..8afca16eb09b 100644
--- a/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix
+++ b/pkgs/tools/graphics/waifu2x-converter-cpp/default.nix
@@ -26,6 +26,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake makeWrapper ];
 
+  # main.cpp:498:12: error: 'is_directory' is unavailable: introduced in macOS 10.15
+  CXXFLAGS = lib.optional (stdenv.hostPlatform.system == "x86_64-darwin") "-D_LIBCPP_DISABLE_AVAILABILITY";
+
   preFixup = lib.optionalString stdenv.isLinux ''
     wrapProgram $out/bin/waifu2x-converter-cpp --prefix LD_LIBRARY_PATH : "${ocl-icd}/lib"
   '';