splitting runtime sim version from the os version

Tools/Sources/Commands/CI/PreviewTests.swift

@@ -5,14 +5,12 @@ struct PreviewTests: AsyncParsableCommand {
     static let configuration = CommandConfiguration(commandName: "preview-tests",
                                                     abstract: "Runs the preview test CI workflow, with optional snapshot recording.")
 
-    @Option(help: "iOS version for the simulator.")
-    var osVersion = "26.4"
-
     @Flag(help: "Re-record snapshots for tests that fail or are missing a reference image.")
     var record = false
 
     private static let scheme = "PreviewTests"
     private static let device = "iPhone SE (3rd generation)"
+    private static let osVersion = "26.4.1"
     private static let simulatorType = "com.apple.CoreSimulator.SimDeviceType.iPhone-SE-3rd-generation"
     private static let testPlanPath = "PreviewTests/SupportingFiles/PreviewTests.xctestplan"
 
@@ -27,7 +25,7 @@ struct PreviewTests: AsyncParsableCommand {
             try await RunTests.parse([
                 "--scheme", Self.scheme,
                 "--device", Self.device,
-                "--os-version", osVersion,
+                "--os-version", Self.osVersion,
                 "--create-simulator-name", Self.device,
                 "--create-simulator-type", Self.simulatorType
             ]).run()

Tools/Sources/Commands/CI/RunTests.swift

@@ -21,7 +21,11 @@ struct RunTests: AsyncParsableCommand {
     var device = "iPhone 17"
     
     @Option(help: "The iOS version to use for the simulator runtime (e.g. '26.4').")
-    var osVersion = "26.4"
+    var osVersion = "26.4.1"
+    
+    var runtime: String {
+        osVersion.split(separator: ".").prefix(2).joined(separator: ".")
+    }
     
     @Option(help: "Number of times to retry failed tests. Only the failing tests are re-run, not the entire suite.")
     var retries = 0
@@ -48,7 +52,7 @@ struct RunTests: AsyncParsableCommand {
     }
     
     private var simulatorRuntime: String {
-        "com.apple.CoreSimulator.SimRuntime.iOS-\(osVersion.replacingOccurrences(of: ".", with: "-"))"
+        "com.apple.CoreSimulator.SimRuntime.iOS-\(runtime.replacingOccurrences(of: ".", with: "-"))"
     }
     
     func run() async throws {
@@ -81,9 +85,9 @@ struct RunTests: AsyncParsableCommand {
     private func createSimulatorIfNecessary(name: String, type: String) async throws {
         logger.info("Checking for simulator '\(name)'…")
         
-        guard let simulators = try await CI.run(.path("/bin/zsh"), ["-cu", "xcrun simctl list devices \"iOS \(osVersion)\" available"],
+        guard let simulators = try await CI.run(.path("/bin/zsh"), ["-cu", "xcrun simctl list devices \"iOS \(runtime)\" available"],
                                                 output: .string(limit: 4096)).standardOutput else {
-            logger.info("No simulators found for iOS \(osVersion). Creating '\(name)'…")
+            logger.info("No simulators found for iOS \(runtime). Creating '\(name)'…")
             try await createSimulator(name: name, type: type)
             return
         }

Tools/Sources/Commands/CI/UnitTests.swift

@@ -4,16 +4,13 @@ import Foundation
 struct UnitTests: AsyncParsableCommand {
     static let configuration = CommandConfiguration(commandName: "unit-tests",
                                                     abstract: "Runs the unit test CI workflow: lint, unit tests, preview tests, and result collection.")
-    
+        
-    @Option(help: "Device name for unit tests.")
-    var device = "iPhone 17"
-    
-    @Option(help: "iOS version for the simulator.")
-    var osVersion = "26.4.1"
-    
     @Flag(help: "Skip preview tests")
     var skipPreviews = false
     
+    private static let osVersion = "26.4.1"
+    private static let device = "iPhone 17"
+    
     func run() async throws {
         try await CI.lint()
         
@@ -24,8 +21,8 @@ struct UnitTests: AsyncParsableCommand {
             logger.info("\n🧪 Running unit tests…\n")
             try await RunTests.parse([
                 "--scheme", "UnitTests",
-                "--device", device,
+                "--device", Self.device,
-                "--os-version", osVersion,
+                "--os-version", Self.osVersion,
                 "--retries", "3"
             ]).run()
         } catch {