all: add support for macOS to flake.nix

The Nix version of the macOS toolchain has difficulties compiling
Objective-C modules; disable modules instead of figuring out why.
It also doesn't include any frameworks automatically; add them explicitly.

While here, move suppression of OpenGL deprecation to a GL-specific
file.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

flake.nix

@@ -47,6 +47,12 @@
                   xorg.libXfixes
                   libGL
                   pkgconfig
+                ] else if stdenv.isDarwin then [
+                  darwin.apple_sdk_11_0.frameworks.Foundation
+                  darwin.apple_sdk_11_0.frameworks.Metal
+                  darwin.apple_sdk_11_0.frameworks.QuartzCore
+                  darwin.apple_sdk_11_0.frameworks.AppKit
+                  darwin.apple_sdk_11_0.MacOSX-SDK
                 ] else [ ]);
               } // (if stdenv.isLinux then {
                 LD_LIBRARY_PATH = "${vulkan-loader}/lib";