// swift-tools-version:5.0
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let package = Package(
    name: "CGPointVector",
    platforms: [
        .iOS(.v8),
        .macOS(.v10_10),
        .tvOS(.v9),
        .watchOS(.v2),
    ],
    products: [
        // Products define the executables and libraries produced by a package, and make them visible to other packages.
        .library(
            name: "CGPointVector",
            targets: ["CGPointVector"]),
    ],
    dependencies: [
        // Dependencies declare other packages that this package depends on.
        // .package(url: /* package url */, from: "1.0.0"),
    ],
    targets: [
        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
        .target(
            name: "CGPointVector",
            dependencies: [],
            path: "Sources"),
        .testTarget(
            name: "CGPointVectorTests",
            dependencies: ["CGPointVector"]),
    ],
    swiftLanguageVersions: [.v5]
)

// swift-tools-version:4.0
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let package = Package(
    name: "CGPointVector",
    products: [
        // Products define the executables and libraries produced by a package, and make them visible to other packages.
        .library(
            name: "CGPointVector",
            targets: ["CGPointVector"]),
    ],
    dependencies: [
        // Dependencies declare other packages that this package depends on.
        // .package(url: /* package url */, from: "1.0.0"),
    ],
    targets: [
        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
        .target(
            name: "CGPointVector",
            dependencies: [],
            path: "Sources"),
        .testTarget(
            name: "CGPointVectorTests",
            dependencies: ["CGPointVector"]),
    ]
)
--- 
+++ 
@@ -1,10 +1,16 @@
-// swift-tools-version:4.0
+// swift-tools-version:5.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
 let package = Package(
     name: "CGPointVector",
+    platforms: [
+        .iOS(.v8),
+        .macOS(.v10_10),
+        .tvOS(.v9),
+        .watchOS(.v2),
+    ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.
         .library(
@@ -25,5 +31,6 @@
         .testTarget(
             name: "CGPointVectorTests",
             dependencies: ["CGPointVector"]),
-    ]
+    ],
+    swiftLanguageVersions: [.v5]
 )
Support only Swift 5.0 and later
