Enable package access in 5.9

Author: elsh

Fixtures/Miscellaneous/PackageNameFlag/appPkg/Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:999.0
+// swift-tools-version:5.9
 import PackageDescription
 
 let package = Package(

Fixtures/Miscellaneous/PackageNameFlag/fooPkg/Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:999.0
+// swift-tools-version:5.9
 import PackageDescription
 
 let package = Package(

Fixtures/Miscellaneous/TargetPackageAccess/libPkg/Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:999.0
+// swift-tools-version:5.9
 import PackageDescription
 
 let package = Package(

Sources/PackageDescription/Target.swift

@@ -568,7 +568,7 @@ public final class Target {
     ///   - swiftSettings: The Swift settings for this target.
     ///   - linkerSettings: The linker settings for this target.
     ///   - plugins: The plug-ins used by this target
-    @available(_PackageDescription, introduced: 999.0)
+  @available(_PackageDescription, introduced: 5.9)
     public static func target(
         name: String,
         dependencies: [Dependency] = [],
@@ -740,7 +740,7 @@ public final class Target {
     ///   - swiftSettings: The Swift settings for this target.
     ///   - linkerSettings: The linker settings for this target.
     ///   - plugins: The plug-ins used by this target
-    @available(_PackageDescription, introduced: 999.0)
+    @available(_PackageDescription, introduced: 5.9)
     public static func executableTarget(
         name: String,
         dependencies: [Dependency] = [],
@@ -986,7 +986,7 @@ public final class Target {
     ///   - swiftSettings: The Swift settings for this target.
     ///   - linkerSettings: The linker settings for this target.
     ///   - plugins: The plug-ins used by this target.
-    @available(_PackageDescription, introduced: 999.0)
+    @available(_PackageDescription, introduced: 5.9)
     public static func testTarget(
         name: String,
         dependencies: [Dependency] = [],
@@ -1214,7 +1214,7 @@ public final class Target {
     ///   - sources: The source files in the plug-in target.
     ///   - packageAccess: Allows access to package symbols from other targets in the package.
     /// - Returns: A `Target` instance.
-    @available(_PackageDescription, introduced: 999.0)
+    @available(_PackageDescription, introduced: 5.9)
     public static func plugin(
         name: String,
         capability: PluginCapability,

Sources/PackageModel/PackageModel.swift

@@ -125,7 +125,7 @@ extension Manifest {
         return self.toolsVersion >= .v5_8
     }
     public var usePackageNameFlag: Bool {
-        return self.toolsVersion >= .vNext
+        return self.toolsVersion >= .v5_9
     }
 }
 

Tests/BuildTests/BuildPlanTests.swift

@@ -552,7 +552,7 @@ final class BuildPlanTests: XCTestCase {
             if isFlagSupportedInDriver {
                 XCTAssertMatch(stdout, .contains("-package-name apppkg"))
                 XCTAssertMatch(stdout, .contains("-package-name foopkg"))
-                // the flag is not supported in old toolsversions
+                // the flag is not supported if < 5.9
                 XCTAssertNoMatch(stdout, .contains("-package-name barpkg"))
             } else {
                 XCTAssertNoMatch(stdout, .contains("-package-name"))