From 467898029ec2c2ad969c042f13e1219c3451d0fa Mon Sep 17 00:00:00 2001
From: midchildan <git@midchildan.org>
Date: Tue, 30 Mar 2021 22:37:30 +0900
Subject: [PATCH] attr: explain blocker for macOS support

---
 pkgs/development/libraries/attr/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/attr/default.nix b/pkgs/development/libraries/attr/default.nix
index b7c9287b68b..b81afc24ee9 100644
--- a/pkgs/development/libraries/attr/default.nix
+++ b/pkgs/development/libraries/attr/default.nix
@@ -31,7 +31,15 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     homepage = "https://savannah.nongnu.org/projects/attr/";
     description = "Library and tools for manipulating extended attributes";
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     license = licenses.gpl2Plus;
+
+    # The build failure on Darwin will likely be solved after upgrading the
+    # macOS SDK in nixpkgs. Check the current SDK version in
+    # ../../../../os-specific/darwin/apple-sdk/default.nix to see if it has
+    # been updated to 10.13 or later. Once the requirements are met, building
+    # it should be straightforward as Homebrew was able to build it without
+    # patching.
+    broken = stdenv.isDarwin;
   };
 }