Allow setting deployment target devices

Sources/ProjectDescription/DeploymentDevice.swift

@@ -0,0 +1,15 @@
+import Foundation
+
+// MARK: - DeploymentDevice
+
+public struct DeploymentDevice: OptionSet, Codable {
+    public static let iphone = DeploymentDevice(rawValue: 1 << 0)
+    public static let ipad = DeploymentDevice(rawValue: 1 << 1)
+    public static let mac = DeploymentDevice(rawValue: 1 << 2)
+
+    public let rawValue: UInt
+
+    public init(rawValue: UInt) {
+        self.rawValue = rawValue
+    }
+}

Sources/ProjectDescription/DeploymentTarget.swift

@@ -0,0 +1,47 @@
+import Foundation
+
+// MARK: - DeploymentTarget
+
+public enum DeploymentTarget: Codable {
+    case iOS(String, [DeploymentDevice])
+    case macOS(String)
+    // TODO: 🙈 Add `watchOS` and `tvOS` support
+
+    private enum Kind: String, Codable {
+        case iOS
+        case macOS
+    }
+
+    enum CodingKeys: String, CodingKey {
+        case kind
+        case version
+        case deploymentDevices
+    }
+
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        let kind = try container.decode(Kind.self, forKey: .kind)
+        switch kind {
+        case .iOS:
+            let version = try container.decode(String.self, forKey: .version)
+            let deploymentDevices = try container.decode([DeploymentDevice].self, forKey: .deploymentDevices)
+            self = .iOS(version, deploymentDevices)
+        case .macOS:
+            let version = try container.decode(String.self, forKey: .version)
+            self = .macOS(version)
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        switch self {
+        case let .iOS(version, deploymentDevices):
+            try container.encode(Kind.iOS.self, forKey: .kind)
+            try container.encode(version, forKey: .version)
+            try container.encode(deploymentDevices, forKey: .deploymentDevices)
+        case let .macOS(version):
+            try container.encode(Kind.macOS.self, forKey: .kind)
+            try container.encode(version, forKey: .version)
+        }
+    }
+}

Sources/ProjectDescription/Target.swift

@@ -20,6 +20,9 @@ public class Target: Codable {
     /// this value to the name of the target.
     public let productName: String?
 
+    /// Deployment target.
+    public let deploymentTarget: DeploymentTarget?
+
     /// Relative path to the Info.plist file.
     public let infoPlist: InfoPlist
 
@@ -66,6 +69,7 @@ public class Target: Codable {
         case coreDataModels = "core_data_models"
         case actions
         case environment
+        case deploymentTarget
     }
 
     /// Initializes the target.
@@ -90,6 +94,7 @@ public class Target: Codable {
                 product: Product,
                 productName: String? = nil,
                 bundleId: String,
+                deploymentTarget: DeploymentTarget? = nil,
                 infoPlist: InfoPlist,
                 sources: SourceFilesList? = nil,
                 resources: [FileElement]? = nil,
@@ -115,5 +120,6 @@ public class Target: Codable {
         self.actions = actions
         self.coreDataModels = coreDataModels
         self.environment = environment
+        self.deploymentTarget = deploymentTarget
     }
 }

Sources/TuistGenerator/Generator/ConfigGenerator.swift

@@ -128,6 +128,7 @@ final class ConfigGenerator: ConfigGenerating {
         let settingsHelper = SettingsHelper()
         var settings = try defaultSettingsProvider.targetSettings(target: target,
                                                                   buildConfiguration: buildConfiguration)
+        update(buildSettings: &settings, byApplying: target)
         settingsHelper.extend(buildSettings: &settings, with: target.settings?.base ?? [:])
         settingsHelper.extend(buildSettings: &settings, with: configuration?.settings ?? [:])
 
@@ -148,6 +149,21 @@ final class ConfigGenerator: ConfigGenerating {
         pbxproj.add(object: variantBuildConfiguration)
         configurationList.buildConfigurations.append(variantBuildConfiguration)
     }
+
+    private func update(buildSettings settings: inout [String: SettingValue], byApplying manifest: Target) {
+        if let deploymentTarget = manifest.deploymentTarget {
+            switch deploymentTarget {
+            case let .iOS(_, devices):
+                if manifest.platform == .iOS {
+                    settings["TARGETED_DEVICE_FAMILY"] = .string(devices.map { "\($0.rawValue)" }.joined(separator: ","))
+                }
+            case .macOS:
+                if manifest.platform == .macOS {
+                    settings["TARGETED_DEVICE_FAMILY"] = .string("\(DeploymentDevice.mac.rawValue)")
+                }
+            }
+        }
+    }
 
     private func updateTargetDerived(buildSettings settings: inout [String: SettingValue],
                                      target: Target,

Sources/TuistGenerator/Models/DeploymentDevice.swift

@@ -0,0 +1,15 @@
+import Foundation
+
+// MARK: - DeploymentDevice
+
+public struct DeploymentDevice: OptionSet {
+    public static let iphone = DeploymentDevice(rawValue: 1 << 0)
+    public static let ipad = DeploymentDevice(rawValue: 1 << 1)
+    public static let mac = DeploymentDevice(rawValue: 1 << 2)
+
+    public let rawValue: UInt
+
+    public init(rawValue: UInt) {
+        self.rawValue = rawValue
+    }
+}

Sources/TuistGenerator/Models/DeploymentTarget.swift

@@ -0,0 +1,9 @@
+import Foundation
+
+// MARK: - DeploymentTarget
+
+public enum DeploymentTarget {
+    case iOS(String, [DeploymentDevice])
+    case macOS(String)
+    // TODO: 🙈 Add `watchOS` and `tvOS` support
+}

Sources/TuistGenerator/Models/Target.swift

@@ -17,6 +17,7 @@ public class Target: Equatable, Hashable {
     public let product: Product
     public let bundleId: String
     public let productName: String
+    public let deploymentTarget: DeploymentTarget?
 
     // An info.plist file is needed for (dynamic) frameworks, applications and executables
     // however is not needed for other products such as static libraries.
@@ -39,6 +40,7 @@ public class Target: Equatable, Hashable {
                 product: Product,
                 productName: String?,
                 bundleId: String,
+                deploymentTarget: DeploymentTarget? = nil,
                 infoPlist: InfoPlist? = nil,
                 entitlements: AbsolutePath? = nil,
                 settings: Settings? = nil,
@@ -55,6 +57,7 @@ public class Target: Equatable, Hashable {
         self.platform = platform
         self.bundleId = bundleId
         self.productName = productName ?? name.replacingOccurrences(of: "-", with: "_")
+        self.deploymentTarget = deploymentTarget
         self.infoPlist = infoPlist
         self.entitlements = entitlements
         self.settings = settings

Sources/TuistKit/Generator/GeneratorModelLoader.swift

@@ -302,6 +302,7 @@ extension TuistGenerator.Target {
 
         let bundleId = manifest.bundleId
         let productName = manifest.productName
+        let deploymentTarget = manifest.deploymentTarget.map { TuistGenerator.DeploymentTarget.from(manifest: $0) }
 
         let dependencies = manifest.dependencies.map { TuistGenerator.Dependency.from(manifest: $0) }
 
@@ -336,6 +337,7 @@ extension TuistGenerator.Target {
                                      product: product,
                                      productName: productName,
                                      bundleId: bundleId,
+                                     deploymentTarget: deploymentTarget,
                                      infoPlist: infoPlist,
                                      entitlements: entitlements,
                                      settings: settings,
@@ -699,3 +701,14 @@ extension TuistGenerator.SDKStatus {
         }
     }
 }
+
+extension TuistGenerator.DeploymentTarget {
+    static func from(manifest: ProjectDescription.DeploymentTarget) -> TuistGenerator.DeploymentTarget {
+        switch manifest {
+        case let .iOS(version, devices):
+            return .iOS(version, devices.map { DeploymentDevice(rawValue: $0.rawValue) })
+        case let .macOS(version):
+            return .macOS(version)
+        }
+    }
+}

Tests/ProjectDescriptionTests/DeploymentTargetTests.swift

@@ -0,0 +1,19 @@
+import Foundation
+import TuistCoreTesting
+import XCTest
+
+@testable import ProjectDescription
+
+final class DeploymentTargetTests: XCTestCase {
+    func test_toJSON_whenIOS() {
+        let subject = DeploymentTarget.iOS("13.1", [.iphone, .ipad])
+        let expected = "{\"kind\":\"iOS\",\"version\":\"13.1\",\"deploymentDevices\":[1,2]}"
+        XCTAssertCodableEqualToJson(subject, expected)
+    }
+
+    func test_toJSON_whenMacOS() {
+        let subject = DeploymentTarget.macOS("10.15")
+        let expected = "{\"kind\":\"macOS\",\"version\":\"10.15\"}"
+        XCTAssertCodableEqualToJson(subject, expected)
+    }
+}

Tests/ProjectDescriptionTests/TargetTests.swift

@@ -11,6 +11,7 @@ final class TargetTests: XCTestCase {
                              product: .app,
                              productName: "product_name",
                              bundleId: "bundle_id",
+                             deploymentTarget: .iOS("13.1", [.iphone, .ipad]),
                              infoPlist: "info.plist",
                              sources: "sources/*",
                              resources: "resources/*",
@@ -37,6 +38,11 @@ final class TargetTests: XCTestCase {
 
         let expected = """
         {
+            "deploymentTarget": {
+               "kind": "iOS",
+               "version": "13.1",
+               "deploymentDevices": [1, 2]
+            },
             "headers": {
                 "public": { "globs": ["public\\/*"] },
                 "private": { "globs": ["private\\/*"] },

Tests/TuistGeneratorTests/Models/TestData/Target+TestData.swift

@@ -10,6 +10,7 @@ extension Target {
                      product: Product = .app,
                      productName: String? = nil,
                      bundleId: String = "com.test.bundle_id",
+                     deploymentTarget: DeploymentTarget? = .iOS("13.1", [.iphone, .ipad]),
                      infoPlist: InfoPlist? = .file(path: AbsolutePath("/Info.plist")),
                      entitlements: AbsolutePath? = AbsolutePath("/Test.entitlements"),
                      settings: Settings? = Settings.test(),
@@ -45,6 +46,7 @@ extension Target {
                       product: Product = .app,
                       productName: String? = nil,
                       bundleId: String = "com.test.bundleId",
+                      deploymentTarget: DeploymentTarget? = nil,
                       infoPlist: InfoPlist? = nil,
                       entitlements: AbsolutePath? = nil,
                       settings: Settings? = nil,