fix

Author: stephencelis

Sources/ComposableArchitecture/SwiftUI/ConfirmationDialog.swift

@@ -90,21 +90,25 @@ private struct NewConfirmationDialogModifier<Action>: ViewModifier {
 }
 
 @available(iOS 13, *)
-@available(macOS, unavailable)
+@available(macOS 12, *)
 @available(tvOS 13, *)
 @available(watchOS 6, *)
 private struct OldConfirmationDialogModifier<Action>: ViewModifier {
   @ObservedObject var viewStore: ViewStore<ConfirmationDialogState<Action>?, Action>
   let dismiss: Action
 
   func body(content: Content) -> some View {
-    content.actionSheet(item: viewStore.binding(send: dismiss)) {
-      ActionSheet($0) { action in
-        if let action = action {
-          viewStore.send(action)
+    #if !os(macOS)
+      content.actionSheet(item: viewStore.binding(send: dismiss)) {
+        ActionSheet($0) { action in
+          if let action = action {
+            viewStore.send(action)
+          }
         }
       }
-    }
+    #else
+      EmptyView()
+    #endif
   }
 }