From adf11dcc01ed413a03597d119bae414de70b9e55 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Sat, 17 Mar 2018 13:58:41 +0100
Subject: [PATCH] darwin-frameworks: add hook for private frameworks to
 CoreMIDI

Some parts of CoreMIDI depend on private frameworks, this enables eg.
adding -framework MultitouchSupport to a build.
---
 pkgs/os-specific/darwin/apple-sdk/default.nix             | 7 +++++++
 .../darwin/apple-sdk/private-frameworks-setup-hook.sh     | 8 ++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 pkgs/os-specific/darwin/apple-sdk/private-frameworks-setup-hook.sh

diff --git a/pkgs/os-specific/darwin/apple-sdk/default.nix b/pkgs/os-specific/darwin/apple-sdk/default.nix
index 5a58410ae92..7f6f0cdd0c4 100644
--- a/pkgs/os-specific/darwin/apple-sdk/default.nix
+++ b/pkgs/os-specific/darwin/apple-sdk/default.nix
@@ -210,6 +210,13 @@ in rec {
       ];
     });
 
+    CoreMIDI = stdenv.lib.overrideDerivation super.CoreMIDI (drv: {
+      __propagatedImpureHostDeps = drv.__propagatedImpureHostDeps ++ [
+        "/System/Library/PrivateFrameworks/"
+      ];
+      setupHook = ./private-frameworks-setup-hook.sh;
+    });
+
     Security = stdenv.lib.overrideDerivation super.Security (drv: {
       setupHook = ./security-setup-hook.sh;
     });
diff --git a/pkgs/os-specific/darwin/apple-sdk/private-frameworks-setup-hook.sh b/pkgs/os-specific/darwin/apple-sdk/private-frameworks-setup-hook.sh
new file mode 100644
index 00000000000..fbd977f8552
--- /dev/null
+++ b/pkgs/os-specific/darwin/apple-sdk/private-frameworks-setup-hook.sh
@@ -0,0 +1,8 @@
+addPrivateFrameworks() {
+    flag="-F/System/Library/PrivateFrameworks"
+    if [[ "$NIX_CFLAGS_COMPILE" != *$flag* ]]; then
+        NIX_CFLAGS_COMPILE+=" $flag"
+    fi
+}
+
+addEnvHooks "$hostOffset" addPrivateFrameworks