feat: add package traits for each dependency

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 6.0
+// swift-tools-version: 6.3
 
 import CompilerPluginSupport
 import PackageDescription
@@ -25,6 +25,14 @@ let package = Package(
       targets: ["DependenciesTestSupport"]
     ),
   ],
+  traits: [
+    "Clocks",
+    "CombineSchedulers",
+    "Foundation",
+    .default(enabledTraits: [
+      "Clocks", "CombineSchedulers", "Foundation"
+    ])
+  ],
   dependencies: [
     .package(url: "https://github.com/pointfreeco/combine-schedulers", from: "1.0.2"),
     .package(url: "https://github.com/pointfreeco/swift-clocks", from: "1.0.4"),
@@ -42,9 +50,21 @@ let package = Package(
     .target(
       name: "Dependencies",
       dependencies: [
-        .product(name: "Clocks", package: "swift-clocks"),
-        .product(name: "CombineSchedulers", package: "combine-schedulers"),
-        .product(name: "ConcurrencyExtras", package: "swift-concurrency-extras"),
+        .product(
+          name: "Clocks",
+          package: "swift-clocks",
+          condition: .when(traits: ["Clocks"])
+        ),
+        .product(
+          name: "CombineSchedulers",
+          package: "combine-schedulers",
+          condition: .when(traits: ["CombineSchedulers"])
+        ),
+        .product(
+          name: "ConcurrencyExtras",
+          package: "swift-concurrency-extras",
+          condition: .when(traits: ["Foundation"])
+        ),
         .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
         .product(name: "XCTestDynamicOverlay", package: "xctest-dynamic-overlay"),
       ]

Package@swift-5.9.swift

@@ -43,6 +43,11 @@ let package = Package(
         .product(name: "ConcurrencyExtras", package: "swift-concurrency-extras"),
         .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
         .product(name: "XCTestDynamicOverlay", package: "xctest-dynamic-overlay"),
+      ],
+      swiftSettings: [
+        .define("Clocks"),
+        .define("CombineSchedulers"),
+        .define("Foundation"),
       ]
     ),
     .testTarget(

Package@swift-6.0.swift

@@ -0,0 +1,125 @@
+// swift-tools-version: 6.0
+
+import CompilerPluginSupport
+import PackageDescription
+
+let package = Package(
+  name: "swift-dependencies",
+  platforms: [
+    .iOS(.v13),
+    .macOS(.v10_15),
+    .tvOS(.v13),
+    .watchOS(.v6),
+  ],
+  products: [
+    .library(
+      name: "Dependencies",
+      targets: ["Dependencies"]
+    ),
+    .library(
+      name: "DependenciesMacros",
+      targets: ["DependenciesMacros"]
+    ),
+    .library(
+      name: "DependenciesTestSupport",
+      targets: ["DependenciesTestSupport"]
+    ),
+  ],
+  dependencies: [
+    .package(url: "https://github.com/pointfreeco/combine-schedulers", from: "1.0.2"),
+    .package(url: "https://github.com/pointfreeco/swift-clocks", from: "1.0.4"),
+    .package(url: "https://github.com/pointfreeco/swift-concurrency-extras", from: "1.0.0"),
+    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.4.0"),
+    .package(url: "https://github.com/swiftlang/swift-syntax", "509.0.0"..<"603.0.0"),
+  ],
+  targets: [
+    .target(
+      name: "DependenciesTestObserver",
+      dependencies: [
+        .product(name: "IssueReporting", package: "xctest-dynamic-overlay")
+      ]
+    ),
+    .target(
+      name: "Dependencies",
+      dependencies: [
+        .product(name: "Clocks", package: "swift-clocks"),
+        .product(name: "CombineSchedulers", package: "combine-schedulers"),
+        .product(name: "ConcurrencyExtras", package: "swift-concurrency-extras"),
+        .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
+        .product(name: "XCTestDynamicOverlay", package: "xctest-dynamic-overlay"),
+      ],
+      swiftSettings: [
+        .define("Clocks"),
+        .define("CombineSchedulers"),
+        .define("Foundation"),
+      ]
+    ),
+    .target(
+      name: "DependenciesTestSupport",
+      dependencies: [
+        "Dependencies",
+        .product(name: "ConcurrencyExtras", package: "swift-concurrency-extras"),
+        .product(name: "IssueReportingTestSupport", package: "xctest-dynamic-overlay"),
+      ]
+    ),
+    .testTarget(
+      name: "DependenciesTests",
+      dependencies: [
+        "Dependencies",
+        "DependenciesTestSupport",
+        .product(name: "IssueReportingTestSupport", package: "xctest-dynamic-overlay"),
+      ],
+      exclude: ["Dependencies.xctestplan"]
+    ),
+    .target(
+      name: "DependenciesMacros",
+      dependencies: [
+        "DependenciesMacrosPlugin",
+        .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
+        .product(name: "XCTestDynamicOverlay", package: "xctest-dynamic-overlay"),
+      ]
+    ),
+    .macro(
+      name: "DependenciesMacrosPlugin",
+      dependencies: [
+        .product(name: "SwiftSyntaxMacros", package: "swift-syntax"),
+        .product(name: "SwiftCompilerPlugin", package: "swift-syntax"),
+      ]
+    ),
+  ],
+  swiftLanguageModes: [.v6]
+)
+
+#if !os(macOS) && !os(WASI)
+  package.products.append(
+    .library(
+      name: "DependenciesTestObserver",
+      type: .dynamic,
+      targets: ["DependenciesTestObserver"]
+    )
+  )
+#endif
+
+#if !os(WASI)
+  package.dependencies.append(
+    .package(url: "https://github.com/pointfreeco/swift-macro-testing", from: "0.2.0")
+  )
+  package.targets.append(contentsOf: [
+    .testTarget(
+      name: "DependenciesMacrosPluginTests",
+      dependencies: [
+        "Dependencies",
+        "DependenciesMacros",
+        "DependenciesMacrosPlugin",
+        .product(name: "MacroTesting", package: "swift-macro-testing"),
+      ]
+    )
+  ])
+#endif
+
+#if !os(Windows)
+  // Add the documentation compiler plugin if possible
+  package.dependencies.append(
+    .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0")
+  )
+#endif

Sources/Dependencies/DependencyValues/Calendar.swift

@@ -1,3 +1,4 @@
+#if Foundation
 import Foundation
 
 extension DependencyValues {
@@ -43,3 +44,4 @@ extension DependencyValues {
     #endif
   }
 }
+#endif

Sources/Dependencies/DependencyValues/Clocks.swift

@@ -1,3 +1,4 @@
+#if Clocks
 #if (canImport(RegexBuilder) || !os(macOS) && !targetEnvironment(macCatalyst))
   @available(iOS 16, macOS 13, tvOS 16, watchOS 9, *)
   extension DependencyValues {
@@ -78,3 +79,4 @@
     }
   }
 #endif
+#endif

Sources/Dependencies/DependencyValues/Date.swift

@@ -1,3 +1,4 @@
+#if Foundation
 import Foundation
 
 extension DependencyValues {
@@ -73,3 +74,4 @@ public struct DateGenerator: Sendable {
     self.generate()
   }
 }
+#endif

Sources/Dependencies/DependencyValues/Locale.swift

@@ -1,3 +1,4 @@
+#if Foundation
 import Foundation
 
 extension DependencyValues {
@@ -56,3 +57,4 @@ extension DependencyValues {
     #endif
   }
 }
+#endif

Sources/Dependencies/DependencyValues/MainQueue.swift

@@ -1,3 +1,4 @@
+#if CombineSchedulers
 #if canImport(Combine)
   import Foundation
 
@@ -62,3 +63,4 @@
     }
   }
 #endif
+#endif

Sources/Dependencies/DependencyValues/MainRunLoop.swift

@@ -1,3 +1,4 @@
+#if CombineSchedulers
 #if canImport(Combine)
   import Foundation
 
@@ -61,3 +62,4 @@
     }
   }
 #endif
+#endif

Sources/Dependencies/DependencyValues/NotificationCenter.swift

@@ -1,3 +1,4 @@
+#if Foundation
 #if canImport(Foundation)
   import Foundation
 
@@ -29,3 +30,4 @@
     }
   }
 #endif
+#endif

Sources/Dependencies/DependencyValues/TimeZone.swift

@@ -1,3 +1,4 @@
+#if Foundation
 import Foundation
 
 extension DependencyValues {
@@ -42,3 +43,4 @@ extension DependencyValues {
     #endif
   }
 }
+#endif

Sources/Dependencies/DependencyValues/URLSession.swift

@@ -1,3 +1,4 @@
+#if Foundation
 #if !os(WASI)
   import Foundation
 
@@ -113,3 +114,4 @@
     }
   }
 #endif
+#endif

Sources/Dependencies/DependencyValues/UUID.swift

@@ -1,3 +1,4 @@
+#if Foundation
 import Foundation
 
 extension DependencyValues {
@@ -147,3 +148,4 @@ private struct IncrementingUUIDGenerator: Sendable {
     }
   }
 }
+#endif

Sources/Dependencies/Internal/Exports.swift

@@ -1,5 +1,11 @@
+#if Clocks
 @_exported import Clocks
+#endif
+#if CombineSchedulers
 @_exported import CombineSchedulers
+#endif
+#if Foundation
 @_exported import ConcurrencyExtras
+#endif
 @_exported import IssueReporting
 @_exported import XCTestDynamicOverlay