Add constants for new OS versions (#3537)

rdar://79035351

Author: neonichu

Sources/PackageDescription/SupportedPlatforms.swift

@@ -269,6 +269,12 @@ extension SupportedPlatform {
         /// - Since: First available in PackageDescription 5.3
         @available(_PackageDescription, introduced: 5.3)
         public static let v11: MacOSVersion = .init(string: "11.0")
+
+        /// The value that represents macOS 12.0.
+        ///
+        /// - Since: First available in PackageDescription 5.5
+        @available(_PackageDescription, introduced: 5.5)
+        public static let v12: MacOSVersion = .init(string: "12.0")
     }
 
     /// The supported tvOS version.
@@ -314,6 +320,12 @@ extension SupportedPlatform {
         /// - Since: First available in PackageDescription 5.3
         @available(_PackageDescription, introduced: 5.3)
         public static let v14: TVOSVersion = .init(string: "14.0")
+
+        /// The value that represents tvOS 15.0.
+        ///
+        /// - Since: First available in PackageDescription 5.5
+        @available(_PackageDescription, introduced: 5.5)
+        public static let v15: TVOSVersion = .init(string: "15.0")
     }
 
     /// The supported Mac Catalyst version.
@@ -339,6 +351,12 @@ extension SupportedPlatform {
         /// - Since: First available in PackageDescription 5.5
         @available(_PackageDescription, introduced: 5.5)
         public static let v14: MacCatalystVersion = .init(string: "14.0")
+
+        /// The value that represents Mac Catalyst 15.0.
+        ///
+        /// - Since: First available in PackageDescription 5.5
+        @available(_PackageDescription, introduced: 5.5)
+        public static let v15: MacCatalystVersion = .init(string: "15.0")
     }
 
     /// The supported iOS version.
@@ -389,6 +407,12 @@ extension SupportedPlatform {
         /// - Since: First available in PackageDescription 5.3
         @available(_PackageDescription, introduced: 5.3)
         public static let v14: IOSVersion = .init(string: "14.0")
+
+        /// The value that represents iOS 15.0.
+        ///
+        /// - Since: First available in PackageDescription 5.5
+        @available(_PackageDescription, introduced: 5.5)
+        public static let v15: IOSVersion = .init(string: "15.0")
     }
 
     /// The supported watchOS version.
@@ -434,6 +458,12 @@ extension SupportedPlatform {
         /// - Since: First available in PackageDescription 5.3
         @available(_PackageDescription, introduced: 5.3)
         public static let v7: WatchOSVersion = .init(string: "7.0")
+
+        /// The value that represents watchOS 8.0.
+        ///
+        /// - Since: First available in PackageDescription 5.5
+        @available(_PackageDescription, introduced: 5.5)
+        public static let v8: WatchOSVersion = .init(string: "8.0")
     }
 
     /// The supported DriverKit version.
@@ -455,6 +485,10 @@ extension SupportedPlatform {
         /// The value that represents DriverKit 20.0.
         @available(_PackageDescription, introduced: 5.5)
         public static let v20: DriverKitVersion = .init(string: "20.0")
+
+        /// The value that represents DriverKit 21.0.
+        @available(_PackageDescription, introduced: 5.5)
+        public static let v21: DriverKitVersion = .init(string: "21.0")
     }
 }
 

Tests/PackageLoadingTests/PD5_5LoadingTests.swift

@@ -87,4 +87,30 @@ class PackageDescription5_5LoadingTests: PackageDescriptionLoadingTests {
             XCTAssertEqual(manifest.targets[0].sources, ["CountMeIn.swift"])
         }
     }
+
+    func testPlatforms() throws {
+        let stream = BufferedOutputByteStream()
+        stream <<< """
+            import PackageDescription
+            let package = Package(
+               name: "Foo",
+               platforms: [
+                   .macOS(.v12), .iOS(.v15),
+                   .tvOS(.v15), .watchOS(.v8),
+                   .macCatalyst(.v15), .driverKit(.v21),
+               ]
+            )
+            """
+
+        loadManifest(stream.bytes) { manifest in
+            XCTAssertEqual(manifest.platforms, [
+                PlatformDescription(name: "macos", version: "12.0"),
+                PlatformDescription(name: "ios", version: "15.0"),
+                PlatformDescription(name: "tvos", version: "15.0"),
+                PlatformDescription(name: "watchos", version: "8.0"),
+                PlatformDescription(name: "maccatalyst", version: "15.0"),
+                PlatformDescription(name: "driverkit", version: "21.0"),
+            ])
+        }
+    }
 }