Remove availability annotations for Span APIs

Package.swift

@@ -3,10 +3,6 @@
 
 import PackageDescription
 
-let availabilityMacro: SwiftSetting = .enableExperimentalFeature(
-    "AvailabilityMacro=SubprocessSpan: macOS 9999, iOS 9999, tvOS 9999, watchOS 9999, visionOS 9999",
-)
-
 var dep: [Package.Dependency] = [
     .package(
         url: "https://github.com/apple/swift-system",
@@ -59,7 +55,6 @@ let package = Package(
                 .enableExperimentalFeature("NonescapableTypes"),
                 .enableExperimentalFeature("LifetimeDependence"),
                 .enableExperimentalFeature("Span"),
-                availabilityMacro,
             ]
         ),
         .testTarget(
@@ -72,7 +67,6 @@ let package = Package(
             ],
             swiftSettings: [
                 .enableExperimentalFeature("Span"),
-                availabilityMacro,
             ]
         ),
 

Sources/Subprocess/API.swift

@@ -30,9 +30,6 @@
 ///   - output: The method to use for redirecting the standard output.
 ///   - error: The method to use for redirecting the standard error.
 /// - Returns a CollectedResult containing the result of the run.
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 public func run<
     Input: InputProtocol,
     Output: OutputProtocol,
@@ -76,7 +73,6 @@ public func run<
 ///   - error: The method to use for redirecting the standard error.
 /// - Returns a CollectedResult containing the result of the run.
 #if SubprocessSpan
-@available(SubprocessSpan, *)
 public func run<
     InputElement: BitwiseCopyable,
     Output: OutputProtocol,
@@ -480,9 +476,6 @@ public func run<Result>(
 ///   - output: The method to use for redirecting the standard output.
 ///   - error: The method to use for redirecting the standard error.
 /// - Returns a CollectedResult containing the result of the run.
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 public func run<
     Input: InputProtocol,
     Output: OutputProtocol,

Sources/Subprocess/Buffer.swift

@@ -79,9 +79,6 @@ extension AsyncBufferSequence.Buffer {
 
     #if SubprocessSpan
     // Access the storage backing this Buffer
-    #if SubprocessSpan
-    @available(SubprocessSpan, *)
-    #endif
     public var bytes: RawSpan {
         @lifetime(borrow self)
         borrowing get {

Sources/Subprocess/IO/Input.swift

@@ -231,7 +231,6 @@ public final actor StandardInputWriter: Sendable {
     /// - Parameter span: The span to write
     /// - Returns number of bytes written
     #if SubprocessSpan
-    @available(SubprocessSpan, *)
     public func write(_ span: borrowing RawSpan) async throws -> Int {
         return try await self.diskIO.write(span)
     }

Sources/Subprocess/IO/Output.swift

@@ -28,7 +28,6 @@ public protocol OutputProtocol: Sendable, ~Copyable {
 
     #if SubprocessSpan
     /// Convert the output from span to expected output type
-    @available(SubprocessSpan, *)
     func output(from span: RawSpan) throws -> OutputType
     #endif
 
@@ -113,7 +112,6 @@ public struct StringOutput<Encoding: Unicode.Encoding>: OutputProtocol {
     public let maxSize: Int
 
     #if SubprocessSpan
-    @available(SubprocessSpan, *)
     public func output(from span: RawSpan) throws -> String? {
         // FIXME: Span to String
         var array: [UInt8] = []
@@ -153,7 +151,6 @@ public struct BytesOutput: OutputProtocol {
     }
 
     #if SubprocessSpan
-    @available(SubprocessSpan, *)
     public func output(from span: RawSpan) throws -> [UInt8] {
         fatalError("Not implemented")
     }
@@ -227,7 +224,6 @@ extension OutputProtocol where Self == BytesOutput {
 
 // MARK: - Span Default Implementations
 #if SubprocessSpan
-@available(SubprocessSpan, *)
 extension OutputProtocol {
     public func output(from buffer: some Sequence<UInt8>) throws -> OutputType {
         guard let rawBytes: UnsafeRawBufferPointer = buffer as? UnsafeRawBufferPointer else {
@@ -281,7 +277,6 @@ extension OutputProtocol where OutputType == Void {
 
     #if SubprocessSpan
     /// Convert the output from Data to expected output type
-    @available(SubprocessSpan, *)
     public func output(from span: RawSpan) throws {
         // noop
     }
@@ -293,7 +288,6 @@ extension OutputProtocol where OutputType == Void {
 }
 
 #if SubprocessSpan
-@available(SubprocessSpan, *)
 extension OutputProtocol {
     #if os(Windows)
     internal func output(from data: [UInt8]) throws -> OutputType {

Sources/Subprocess/Platforms/Subprocess+Linux.swift

@@ -32,9 +32,6 @@ import _SubprocessCShims
 
 // Linux specific implementations
 extension Configuration {
-    #if SubprocessSpan
-    @available(SubprocessSpan, *)
-    #endif
     internal func spawn(
         withInput inputPipe: consuming CreatedPipe,
         outputPipe: consuming CreatedPipe,

Sources/Subprocess/Platforms/Subprocess+Unix.swift

@@ -446,7 +446,6 @@ extension DispatchIO {
 
 extension TrackedDispatchIO {
     #if SubprocessSpan
-    @available(SubprocessSpan, *)
     internal func write(
         _ span: borrowing RawSpan
     ) async throws -> Int {

Sources/Subprocess/Platforms/Subprocess+Windows.swift

@@ -21,9 +21,6 @@ internal import Dispatch
 
 // Windows specific implementation
 extension Configuration {
-    #if SubprocessSpan
-    @available(SubprocessSpan, *)
-    #endif
     internal func spawn(
         withInput inputPipe: consuming CreatedPipe,
         outputPipe: consuming CreatedPipe,
@@ -534,9 +531,7 @@ internal func monitorProcessTermination(
 }
 
 // MARK: - Subprocess Control
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
+
 extension Execution {
     /// Terminate the current subprocess with the given exit code
     /// - Parameter exitCode: The exit code to use for the subprocess.
@@ -1165,7 +1160,6 @@ extension TrackedFileDescriptor {
     }
 
 #if SubprocessSpan
-    @available(SubprocessSpan, *)
     internal func write(
         _ span: borrowing RawSpan
     ) async throws -> Int {

Sources/Subprocess/Result.swift

@@ -34,9 +34,6 @@ public struct ExecutionResult<Result> {
 
 /// The result of a subprocess execution with its collected
 /// standard output and standard error.
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 public struct CollectedResult<
     Output: OutputProtocol,
     Error: OutputProtocol
@@ -62,24 +59,13 @@ public struct CollectedResult<
 }
 
 // MARK: - CollectedResult Conformances
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
+
 extension CollectedResult: Equatable where Output.OutputType: Equatable, Error.OutputType: Equatable {}
 
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 extension CollectedResult: Hashable where Output.OutputType: Hashable, Error.OutputType: Hashable {}
 
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 extension CollectedResult: Codable where Output.OutputType: Codable, Error.OutputType: Codable {}
 
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 extension CollectedResult: CustomStringConvertible
 where Output.OutputType: CustomStringConvertible, Error.OutputType: CustomStringConvertible {
     public var description: String {
@@ -94,9 +80,6 @@ where Output.OutputType: CustomStringConvertible, Error.OutputType: CustomString
     }
 }
 
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 extension CollectedResult: CustomDebugStringConvertible
 where Output.OutputType: CustomDebugStringConvertible, Error.OutputType: CustomDebugStringConvertible {
     public var debugDescription: String {

Sources/Subprocess/Span+Subprocess.swift

@@ -39,7 +39,6 @@ public func _overrideLifetime<
     dependent
 }
 
-@available(SubprocessSpan, *)
 extension Span where Element: BitwiseCopyable {
 
     internal var _bytes: RawSpan {
@@ -55,7 +54,6 @@ extension Span where Element: BitwiseCopyable {
 #if canImport(Glibc) || canImport(Bionic) || canImport(Musl)
 internal import Dispatch
 
-@available(SubprocessSpan, *)
 extension DispatchData {
     var bytes: RawSpan {
         _read {

Sources/Subprocess/SubprocessFoundation/Output+Foundation.swift

@@ -22,9 +22,6 @@ import FoundationEssentials
 /// A concrete `Output` type for subprocesses that collects output
 /// from the subprocess as `Data`. This option must be used with
 /// the `run()` method that returns a `CollectedResult`
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 public struct DataOutput: OutputProtocol {
     public typealias OutputType = Data
     public let maxSize: Int
@@ -44,9 +41,6 @@ public struct DataOutput: OutputProtocol {
     }
 }
 
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 extension OutputProtocol where Self == DataOutput {
     /// Create a `Subprocess` output that collects output as `Data`
     /// up to 128kb.
@@ -61,9 +55,6 @@ extension OutputProtocol where Self == DataOutput {
     }
 }
 
-#if SubprocessSpan
-@available(SubprocessSpan, *)
-#endif
 extension Data {
     /// Create a `Data` from `Buffer`
     /// - Parameter buffer: buffer to copy from
@@ -74,7 +65,6 @@ extension Data {
 
 // MARK: - Workarounds
 #if SubprocessSpan
-@available(SubprocessSpan, *)
 extension OutputProtocol {
     @_disfavoredOverload
     public func output(from data: some DataProtocol) throws -> OutputType {

Sources/Subprocess/SubprocessFoundation/Span+SubprocessFoundation.swift

@@ -21,7 +21,6 @@ import FoundationEssentials
 
 internal import Dispatch
 
-@available(SubprocessSpan, *)
 extension Data {
     init(_ s: borrowing RawSpan) {
         self = s.withUnsafeBytes { Data($0) }
@@ -37,7 +36,6 @@ extension Data {
     }
 }
 
-@available(SubprocessSpan, *)
 extension DataProtocol {
     var bytes: RawSpan {
         _read {

Tests/SubprocessTests/SubprocessTests+Darwin.swift

@@ -27,9 +27,6 @@ import Testing
 @Suite(.serialized)
 struct SubprocessDarwinTests {
     @Test func testSubprocessPlatformOptionsProcessConfiguratorUpdateSpawnAttr() async throws {
-        guard #available(SubprocessSpan , *) else {
-            return
-        }
         var platformOptions = PlatformOptions()
         platformOptions.preSpawnProcessConfigurator = { spawnAttr, _ in
             // Set POSIX_SPAWN_SETSID flag, which implies calls
@@ -50,9 +47,6 @@ struct SubprocessDarwinTests {
     }
 
     @Test func testSubprocessPlatformOptionsProcessConfiguratorUpdateFileAction() async throws {
-        guard #available(SubprocessSpan , *) else {
-            return
-        }
         let intendedWorkingDir = FileManager.default.temporaryDirectory.path()
         var platformOptions = PlatformOptions()
         platformOptions.preSpawnProcessConfigurator = { _, fileAttr in
@@ -79,9 +73,6 @@ struct SubprocessDarwinTests {
     }
 
     @Test func testSuspendResumeProcess() async throws {
-        guard #available(SubprocessSpan , *) else {
-            return
-        }
         _ = try await Subprocess.run(
             // This will intentionally hang
             .path("/bin/cat"),

Tests/SubprocessTests/SubprocessTests+Linting.swift

@@ -45,9 +45,6 @@ struct SubprocessLintingTest {
         )
     )
     func runLinter() async throws {
-        guard #available(SubprocessSpan , *) else {
-            return
-        }
         // META: Use Subprocess to run `swift-format` on self
         // to make sure it's properly linted
         guard