libsForQt5.libopenshot-audio: convert to patch

pkgs/applications/video/openshot-qt/libopenshot-audio.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , alsa-lib
 , cmake
 , doxygen
@@ -28,11 +29,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-XtwTZsj/L/sw/28E7Qr5UyghGlBFFXvbmZLGXBB8vg0=";
   };
 
-  # https://github.com/OpenShot/libopenshot-audio/issues/112
-  postPatch = ''
-    substituteInPlace JuceLibraryCode/modules/juce_core/native/juce_osx_ObjCHelpers.h \
-      --replace "#if ! JUCE_IOS" "#if ! JUCE_IOS && ! JUCE_ARM"
-  '';
+  patches = [
+    # https://forum.juce.com/t/juce-and-macos-11-arm/40285/24
+    ./undef-fpret-on-aarch64-darwin.patch
+  ];
 
   nativeBuildInputs = [
     cmake

pkgs/applications/video/openshot-qt/undef-fpret-on-aarch64-darwin.patch

@@ -0,0 +1,13 @@
+diff --git a/JuceLibraryCode/modules/juce_core/native/juce_osx_ObjCHelpers.h b/JuceLibraryCode/modules/juce_core/native/juce_osx_ObjCHelpers.h
+index 2593790..0b5983d 100644
+--- a/JuceLibraryCode/modules/juce_core/native/juce_osx_ObjCHelpers.h
++++ b/JuceLibraryCode/modules/juce_core/native/juce_osx_ObjCHelpers.h
+@@ -209,7 +209,7 @@ static inline ReturnValue ObjCMsgSendSuper (struct objc_super* s, SEL sel, Param
+ typedef id (*MsgSendSuperFn) (struct objc_super*, SEL, ...);
+ static inline MsgSendSuperFn getMsgSendSuperFn() noexcept   { return (MsgSendSuperFn) (void*) objc_msgSendSuper; }
+ 
+-#if ! JUCE_IOS
++#if JUCE_INTEL && ! JUCE_IOS
+ typedef double (*MsgSendFPRetFn) (id, SEL op, ...);
+ static inline MsgSendFPRetFn getMsgSendFPRetFn() noexcept   { return (MsgSendFPRetFn) (void*) objc_msgSend_fpret; }
+ #endif