From 5f5bc79a1bf33493a5fb0e599c4f206fc0cb491e Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Wed, 15 Dec 2021 09:57:12 -0500
Subject: [PATCH] qt5{14,15}.qtbase: fix build on darwin

---
 pkgs/development/libraries/qt-5/modules/qtbase.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/qt-5/modules/qtbase.nix b/pkgs/development/libraries/qt-5/modules/qtbase.nix
index 44f08699824f..b97a4dd5492f 100644
--- a/pkgs/development/libraries/qt-5/modules/qtbase.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtbase.nix
@@ -184,6 +184,12 @@ stdenv.mkDerivation {
     ''-DNIXPKGS_LIBXCURSOR="${libXcursor.out}/lib/libXcursor"''
   ] ++ lib.optional libGLSupported ''-DNIXPKGS_MESA_GL="${libGL.out}/lib/libGL"''
     ++ lib.optional stdenv.isLinux "-DUSE_X11"
+    ++ lib.optionals (stdenv.hostPlatform.system == "x86_64-darwin") [
+      # fix "introduced in macOS 10.13"
+      "-D_LIBCPP_DISABLE_AVAILABILITY"
+      # ignore "is only available on macOS 10.12.2 or newer" in obj-c code
+      "-Wno-error=unguarded-availability"
+    ]
     ++ lib.optionals withGtk3 [
          ''-DNIXPKGS_QGTK3_XDG_DATA_DIRS="${gtk3}/share/gsettings-schemas/${gtk3.name}"''
          ''-DNIXPKGS_QGTK3_GIO_EXTRA_MODULES="${dconf.lib}/lib/gio/modules"''