Bump minimal support to Swift 6.1

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
     strategy:
       matrix:
         swift:
-          - '6.0'
+          - '6.1'
     name: Ubuntu (Swift ${{ matrix.swift }})
     runs-on: ubuntu-latest
     container: swift:${{ matrix.swift }}

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 6.0
+// swift-tools-version: 6.1
 
 import CompilerPluginSupport
 import PackageDescription

Sources/Dependencies/Dependency.swift

@@ -69,14 +69,14 @@
 ///
 /// [tca]: https://github.com/pointfreeco/swift-composable-architecture
 @propertyWrapper
-public struct Dependency<Value>: _HasInitialValues {
+public struct Dependency<Value>: _HasInitialValues, Sendable {
   let initialValues: DependencyValues = DependencyValues._current
   private var installValues: DependencyValues?
   #if canImport(SwiftUI)
     @Environment(\.dependencies) private var environmentValues
   #endif
 
-  private let keyPath: SendableKeyPath<DependencyValues, Value>
+  private let keyPath: KeyPath<DependencyValues, Value> & Sendable
   private let filePath: StaticString
   private let fileID: StaticString
   private let line: UInt
@@ -201,12 +201,6 @@ public struct Dependency<Value>: _HasInitialValues {
   }
 }
 
-#if compiler(>=6)
-  extension Dependency: Sendable {}
-#else
-  extension Dependency: @unchecked Sendable {}
-#endif
-
 #if canImport(SwiftUI)
   extension Dependency: DynamicProperty {
     public mutating func update() {

Sources/Dependencies/DependencyValues.swift

@@ -598,20 +598,7 @@ public final class CachedValues: @unchecked Sendable {
             value = Key.previewValue
           }
         case .test:
-          #if compiler(<6.1)
-            if !CachedValues.isAccessingCachedDependencies,
-              case .swiftTesting(.some(let testing)) = TestContext.current,
-              let testValues = testValuesByTestID.withValue({ $0[testing.test.id.rawValue] })
-            {
-              value = CachedValues.$isAccessingCachedDependencies.withValue(true) {
-                testValues[key]
-              }
-            } else {
-              value = Key.testValue
-            }
-          #else
-            value = Key.testValue
-          #endif
+          value = Key.testValue
         }
 
         let cacheableValue = value ?? Key.testValue

Sources/Dependencies/Documentation.docc/Articles/Testing.md

@@ -315,30 +315,4 @@ class Model {
 You will not be able to override this dependency in the normal fashion. In general there is no need
 to ever have a static dependency, and so you should avoid this pattern.
 
-### Parameterized and repeated @Test runs
-
-> Important: If targeting Swift 6.1+ (Xcode 16.3+), then this gotcha does not apply and can be
-> ignored.
-
-The library comes with support for Swift's new native Testing framework. However, as there are still
-still features missing from the Testing framework that XCTest has, there may be some additional
-steps you must take.
-
-If you are are writing a _parameterized_ test using the `@Test` macro, you will need to surround the
-entire body of your test in [`withDependencies`](<doc:withDependencies(_:operation:)>) that
-resets the entire set of values to guarantee that a fresh set of dependencies is used per parameter:
-
-```swift
-@Test(arguments: [1, 2, 3])
-func feature(_ number: Int) {
-  withDependencies {
-    $0 = DependencyValues()
-  } operation: {
-    // All test code in here...
-  }
-}
-```
-
-This will guarantee that dependency state does not bleed over to each parameter of the test.
-
 [issue-reporting-gh]: http://github.com/pointfreeco/swift-issue-reporting

Sources/Dependencies/Internal/Deprecations.swift

@@ -4,7 +4,7 @@
 
 // MARK: - Deprecated after 1.9.2
 
-#if canImport(SwiftUI) && compiler(>=6)
+#if canImport(SwiftUI)
   @available(iOS 18, macOS 15, tvOS 18, watchOS 11, visionOS 2, *)
   extension PreviewTrait where T == Preview.ViewTraits {
     @available(