pointfreeco · Joannis · Oct 25, 2025
diff --git a/Package.resolved b/Package.resolved
diff --git a/Package.swift b/Package.swift
@@ -32,6 +32,7 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.3.0"),
     .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.0.0"),
     .package(url: "https://github.com/swiftlang/swift-syntax", "509.0.0"..<"603.0.0"),
+    .package(url: "https://github.com/OpenCombine/OpenCombine.git", from: "0.14.0"),
   ],
   targets: [
     .target(
@@ -51,6 +52,13 @@ let package = Package(
         .product(name: "Sharing", package: "swift-sharing"),
         .product(name: "SwiftUINavigation", package: "swift-navigation"),
         .product(name: "UIKitNavigation", package: "swift-navigation"),
+        .product(
+          name: "OpenCombine", package: "OpenCombine",
+          condition: .when(platforms: [
+            .android,
+            .linux,
+          ])
+        ),
       ],
       resources: [
         .process("Resources/PrivacyInfo.xcprivacy")

diff --git a/Package@swift-6.0.swift b/Package@swift-6.0.swift
@@ -32,6 +32,7 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.3.0"),
     .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.0.0"),
     .package(url: "https://github.com/swiftlang/swift-syntax", "509.0.0"..<"603.0.0"),
+    .package(url: "https://github.com/OpenCombine/OpenCombine.git", from: "0.14.0"),
   ],
   targets: [
     .target(
@@ -51,6 +52,13 @@ let package = Package(
         .product(name: "Sharing", package: "swift-sharing"),
         .product(name: "SwiftUINavigation", package: "swift-navigation"),
         .product(name: "UIKitNavigation", package: "swift-navigation"),
+        .product(
+          name: "OpenCombine", package: "OpenCombine",
+          condition: .when(platforms: [
+            .android,
+            .linux,
+          ])
+        ),
       ],
       resources: [
         .process("Resources/PrivacyInfo.xcprivacy")

diff --git a/Sources/ComposableArchitecture/Core.swift b/Sources/ComposableArchitecture/Core.swift
@@ -1,6 +1,11 @@
-import Combine
 import Foundation
 
+#if canImport(Combine)
+  import Combine
+#else
+  import OpenCombine
+#endif
+
 @MainActor
 protocol Core<State, Action>: AnyObject, Sendable {
   associatedtype State
@@ -101,12 +106,14 @@ final class RootCore<Root: Reducer>: Core {
       switch effect.operation {
       case .none:
         break
-      case let .publisher(publisher):
+      case .publisher(let publisher):
         var didComplete = false
         let boxedTask = Box<Task<Void, Never>?>(wrappedValue: nil)
         let effectCancellable = withEscapedDependencies { continuation in
           publisher
-            .receive(on: UIScheduler.shared)
+            #if os(macOS) || os(iOS) || os(watchOS) || os(visionOS) || os(tvOS)
+              .receive(on: UIScheduler.shared)
+            #endif
             .handleEvents(receiveCancel: { [weak self] in self?.effectCancellables[uuid] = nil })
             .sink(
               receiveCompletion: { [weak self] _ in
@@ -136,7 +143,7 @@ final class RootCore<Root: Reducer>: Core {
             task.cancel()
           }
         }
-      case let .run(name, priority, operation):
+      case .run(let name, let priority, let operation):
         withEscapedDependencies { continuation in
           let task = Task(name: name, priority: priority) { @MainActor [weak self] in
             let isCompleted = LockIsolated(false)

diff --git a/Sources/ComposableArchitecture/Dependencies/Dismiss.swift b/Sources/ComposableArchitecture/Dependencies/Dismiss.swift
@@ -1,5 +1,3 @@
-import SwiftUI
-
 extension DependencyValues {
   /// An effect that dismisses the current presentation.
   ///
@@ -78,70 +76,102 @@ extension DependencyValues {
 public struct DismissEffect: Sendable {
   var dismiss: (@MainActor @Sendable () -> Void)?
 
-  @MainActor
-  public func callAsFunction(
-    fileID: StaticString = #fileID,
-    filePath: StaticString = #filePath,
-    line: UInt = #line,
-    column: UInt = #column
-  ) async {
-    await self.callAsFunction(
-      animation: nil,
-      fileID: fileID,
-      filePath: filePath,
-      line: line,
-      column: column
-    )
-  }
-
-  @MainActor
-  public func callAsFunction(
-    animation: Animation?,
-    fileID: StaticString = #fileID,
-    filePath: StaticString = #filePath,
-    line: UInt = #line,
-    column: UInt = #column
-  ) async {
-    await callAsFunction(
-      transaction: Transaction(animation: animation),
-      fileID: fileID,
-      filePath: filePath,
-      line: line,
-      column: column
-    )
-  }
-
-  @MainActor
-  public func callAsFunction(
-    transaction: Transaction,
-    fileID: StaticString = #fileID,
-    filePath: StaticString = #filePath,
-    line: UInt = #line,
-    column: UInt = #column
-  ) async {
-    guard let dismiss = self.dismiss
-    else {
-      reportIssue(
-        """
-        A reducer requested dismissal at "\(fileID):\(line)", but couldn't be dismissed.
+  #if os(macOS) || os(iOS) || os(watchOS) || os(visionOS) || os(tvOS)
+    @MainActor
+    public func callAsFunction(
+      fileID: StaticString = #fileID,
+      filePath: StaticString = #filePath,
+      line: UInt = #line,
+      column: UInt = #column
+    ) async {
+      await self.callAsFunction(
+        animation: nil,
+        fileID: fileID,
+        filePath: filePath,
+        line: line,
+        column: column
+      )
+    }
 
-        This is generally considered an application logic error, and can happen when a reducer \
-        assumes it runs in a presentation context. If a reducer can run at both the root level \
-        of an application, as well as in a presentation destination, use \
-        @Dependency(\\.isPresented) to determine if the reducer is being presented before calling \
-        @Dependency(\\.dismiss).
-        """,
+    @MainActor
+    public func callAsFunction(
+      animation: Animation?,
+      fileID: StaticString = #fileID,
+      filePath: StaticString = #filePath,
+      line: UInt = #line,
+      column: UInt = #column
+    ) async {
+      await callAsFunction(
+        transaction: Transaction(animation: animation),
         fileID: fileID,
         filePath: filePath,
         line: line,
         column: column
       )
-      return
     }
-    withTransaction(transaction) {
+
+    @MainActor
+    public func callAsFunction(
+      transaction: Transaction,
+      fileID: StaticString = #fileID,
+      filePath: StaticString = #filePath,
+      line: UInt = #line,
+      column: UInt = #column
+    ) async {
+      guard let dismiss = self.dismiss
+      else {
+        reportIssue(
+          """
+          A reducer requested dismissal at "\(fileID):\(line)", but couldn't be dismissed.
+
+          This is generally considered an application logic error, and can happen when a reducer \
+          assumes it runs in a presentation context. If a reducer can run at both the root level \
+          of an application, as well as in a presentation destination, use \
+          @Dependency(\\.isPresented) to determine if the reducer is being presented before calling \
+          @Dependency(\\.dismiss).
+          """,
+          fileID: fileID,
+          filePath: filePath,
+          line: line,
+          column: column
+        )
+        return
+      }
+      withTransaction(transaction) {
+        dismiss()
+      }
+    }
+  #else
+    @MainActor
+    public func callAsFunction(
+      fileID: StaticString = #fileID,
+      filePath: StaticString = #filePath,
+      line: UInt = #line,
+      column: UInt = #column
+    ) async {
+      guard let dismiss = self.dismiss
+      else {
+        reportIssue(
+          """
+          A reducer requested dismissal at "\(fileID):\(line)", but couldn't be dismissed.
+
+          This is generally considered an application logic error, and can happen when a reducer \
+          assumes it runs in a presentation context. If a reducer can run at both the root level \
+          of an application, as well as in a presentation destination, use \
+          @Dependency(\\.isPresented) to determine if the reducer is being presented before calling \
+          @Dependency(\\.dismiss).
+          """,
+          fileID: fileID,
+          filePath: filePath,
+          line: line,
+          column: column
+        )
+        return
+      }
+
       dismiss()
     }
-  }
+  #endif
 }
 
 extension DismissEffect {

diff --git a/Sources/ComposableArchitecture/Effect.swift b/Sources/ComposableArchitecture/Effect.swift
@@ -1,6 +1,10 @@
-@preconcurrency import Combine
 import Foundation
-import SwiftUI
+
+#if canImport(Combine)
+  @preconcurrency import Combine
+#else
+  @preconcurrency import OpenCombine
+#endif
 
 public struct Effect<Action>: Sendable {
   @usableFromInline
@@ -148,20 +152,22 @@ extension Effect {
     Self(operation: .publisher(Just(action).eraseToAnyPublisher()))
   }
 
-  /// Initializes an effect that immediately emits the action passed in.
-  ///
-  /// > Note: We do not recommend using `Effect.send` to share logic. Instead, limit usage to
-  /// > child-parent communication, where a child may want to emit a "delegate" action for a parent
-  /// > to listen to.
-  /// >
-  /// > For more information, see <doc:Performance#Sharing-logic-with-actions>.
-  ///
-  /// - Parameters:
-  ///   - action: The action that is immediately emitted by the effect.
-  ///   - animation: An animation.
-  public static func send(_ action: Action, animation: Animation? = nil) -> Self {
-    .send(action).animation(animation)
-  }
+  #if os(macOS) || os(iOS) || os(watchOS) || os(visionOS) || os(tvOS)
+    /// Initializes an effect that immediately emits the action passed in.
+    ///
+    /// > Note: We do not recommend using `Effect.send` to share logic. Instead, limit usage to
+    /// > child-parent communication, where a child may want to emit a "delegate" action for a parent
+    /// > to listen to.
+    /// >
+    /// > For more information, see <doc:Performance#Sharing-logic-with-actions>.
+    ///
+    /// - Parameters:
+    ///   - action: The action that is immediately emitted by the effect.
+    ///   - animation: An animation.
+    public static func send(_ action: Action, animation: Animation? = nil) -> Self {
+      .send(action).animation(animation)
+    }
+  #endif
 }
 
 /// A type that can send actions back into the system when used from
@@ -208,26 +214,28 @@ public struct Send<Action>: Sendable {
     self.send(action)
   }
 
-  /// Sends an action back into the system from an effect with animation.
-  ///
-  /// - Parameters:
-  ///   - action: An action.
-  ///   - animation: An animation.
-  public func callAsFunction(_ action: Action, animation: Animation?) {
-    callAsFunction(action, transaction: Transaction(animation: animation))
-  }
+  #if os(macOS) || os(iOS) || os(watchOS) || os(visionOS) || os(tvOS)
+    /// Sends an action back into the system from an effect with animation.
+    ///
+    /// - Parameters:
+    ///   - action: An action.
+    ///   - animation: An animation.
+    public func callAsFunction(_ action: Action, animation: Animation?) {
+      callAsFunction(action, transaction: Transaction(animation: animation))
+    }
 
-  /// Sends an action back into the system from an effect with transaction.
-  ///
-  /// - Parameters:
-  ///   - action: An action.
-  ///   - transaction: A transaction.
-  public func callAsFunction(_ action: Action, transaction: Transaction) {
-    guard !Task.isCancelled else { return }
-    withTransaction(transaction) {
-      self(action)
+    /// Sends an action back into the system from an effect with transaction.
+    ///
+    /// - Parameters:
+    ///   - action: An action.
+    ///   - transaction: A transaction.
+    public func callAsFunction(_ action: Action, transaction: Transaction) {
+      guard !Task.isCancelled else { return }
+      withTransaction(transaction) {
+        self(action)
+      }
     }
-  }
+  #endif
 }
 
 // MARK: - Composing Effects