alt-tab-macos: fix compatibility building with the 26.x SDK

It’s not clear how upstream is able to build this using an upstream
toolchain, but the header for this API in our SDK has marked it
obsolete. This causes the build to fail even though it won’t be used on
our default deployment target. Fortunately, that means the offending
static method can just be deleted.

pkgs/by-name/al/alt-tab-macos/0005-avoid-using-obsolete-api.patch

@@ -0,0 +1,53 @@
+diff --git a/src/macos/SystemPermissions.swift b/src/macos/SystemPermissions.swift
+index 4a98ef9461..ae983eb73a 100644
+--- a/src/macos/SystemPermissions.swift
++++ b/src/macos/SystemPermissions.swift
+@@ -158,24 +158,7 @@
+     // their return value is not updated during the app lifetime
+     // note: shows the system prompt if there's no permission
+     private static func isGrantedOnSomeDisplay() -> Bool {
+-        if #available(macOS 12.3, *) {
+-            return checkWithSCShareableContent()
+-        } else {
+-            let mainDisplayID = CGMainDisplayID()
+-            if checkWithCGDisplayStream(mainDisplayID) {
+-                return true
+-            }
+-            // maybe the main screen can't produce a CGDisplayStream, but another screen can
+-            // a positive on any screen must mean that the permission is granted; we try on the other screens
+-            for screen in NSScreen.screens {
+-                if let id = screen.number(), id != mainDisplayID {
+-                    if checkWithCGDisplayStream(id) {
+-                        return true
+-                    }
+-                }
+-            }
+-            return false
+-        }
++        return checkWithSCShareableContent()
+     }
+ 
+     @available(macOS 12.3, *)
+@@ -193,22 +176,6 @@
+         }
+     }
+ 
+-    private static func checkWithCGDisplayStream(_ id: CGDirectDisplayID) -> Bool {
+-        return runWithTimeout { completion in
+-            // this initializer can actually block for a while
+-            // it's undocumented but has been proven by spindumps shared by AltTab users
+-            let displayStream = CGDisplayStream(
+-                dispatchQueueDisplay: id,
+-                outputWidth: 1,
+-                outputHeight: 1,
+-                pixelFormat: Int32(kCVPixelFormatType_32BGRA),
+-                properties: nil,
+-                queue: .global()
+-            ) { _, _, _, _ in }
+-            completion(displayStream != nil)
+-        }
+-    }
+-
+     private static func runWithTimeout(_ block: @escaping (@escaping (Bool) -> Void) -> Void) -> Bool {
+         let semaphore = DispatchSemaphore(value: 0)
+         var result = false

pkgs/by-name/al/alt-tab-macos/package.nix

@@ -288,6 +288,8 @@ stdenv.mkDerivation (finalAttrs: {
     ./0003-use-runtime-dispatch-for-Liquid-Glass-with-SDK-14.patch
     # Don't offer preferences for services disabled by the source-only stubs.
     ./0004-hide-settings-for-disabled-services.patch
+    # Avoids error about `CGDisplayStream` initializer being unavailable on macOS when using the 26.x SDK.
+    ./0005-avoid-using-obsolete-api.patch
   ];
 
   # Remove trailing comma incompatible with Swift 5.10