From a2be9025372e05229d32e1a4cb9d050c5ca86a22 Mon Sep 17 00:00:00 2001
From: Emily <vcs@emily.moe>
Date: Mon, 23 Sep 2024 17:05:19 +0100
Subject: [PATCH] libaom: skip `_POSIX_C_SOURCE` patch on Darwin
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This should possibly be a conditional in the patch itself, but I
don’t know what the appropriate CMake conditional would be.
---
 pkgs/development/libraries/libaom/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/libaom/default.nix b/pkgs/development/libraries/libaom/default.nix
index 3845f1bc7ddb..c533c9859f6f 100644
--- a/pkgs/development/libraries/libaom/default.nix
+++ b/pkgs/development/libraries/libaom/default.nix
@@ -23,7 +23,9 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./outputs.patch
-
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
+    # This patch defines `_POSIX_C_SOURCE`, which breaks system headers
+    # on Darwin.
     (fetchurl {
       name = "musl.patch";
       url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/libaom/files/libaom-3.4.0-posix-c-source-ftello.patch?id=50c7c4021e347ee549164595280cf8a23c960959";