diff --git a/Package@swift-5.10.swift b/Package@swift-5.10.swift
deleted file mode 100644
index 77f5d792..00000000
--- a/Package@swift-5.10.swift
+++ /dev/null
@@ -1,304 +0,0 @@
-// swift-tools-version: 5.10
-// The swift-tools-version declares the minimum version of Swift required to build this package.
-
-import Foundation
-import PackageDescription
-
-func envEnable(_ key: String, default defaultValue: Bool = false) -> Bool {
-    guard let value = Context.environment[key] else {
-        return defaultValue
-    }
-    if value == "1" {
-        return true
-    } else if value == "0" {
-        return false
-    } else {
-        return defaultValue
-    }
-}
-
-let isXcodeEnv = Context.environment["__CFBundleIdentifier"] == "com.apple.dt.Xcode"
-let development = envEnable("OPENSWIFTUI_DEVELOPMENT", default: false)
-
-// Xcode use clang as linker which supports "-iframework" while SwiftPM use swiftc as linker which supports "-Fsystem"
-let systemFrameworkSearchFlag = isXcodeEnv ? "-iframework" : "-Fsystem"
-
-let releaseVersion = Context.environment["OPENSWIFTUI_TARGET_RELEASE"].flatMap { Int($0) } ?? 2021
-let platforms: [SupportedPlatform] = switch releaseVersion {
-case 2024:
-    #if swift(>=6.0)
-    [
-        .iOS(.v18),
-        .macOS(.v15),
-        .macCatalyst(.v18),
-        .tvOS(.v18),
-        .watchOS(.v10),
-        .visionOS(.v2),
-    ]
-    #else // FIXME: Remove when we bump to Swift 6.0
-    [
-        .iOS(.v17),
-        .macOS(.v14),
-        .macCatalyst(.v17),
-        .tvOS(.v17),
-        .watchOS(.v9),
-        .visionOS(.v1),
-    ]
-    #endif
-case 2021: // iOS 15.5
-    [
-        .iOS(.v15),
-        .macOS(.v12),
-        .macCatalyst(.v15),
-        .tvOS(.v15),
-        .watchOS(.v7),
-    ]
-default:
-    [
-        .iOS(.v13),
-        .macOS(.v10_15),
-        .macCatalyst(.v13),
-        .tvOS(.v13),
-        .watchOS(.v7), // WKApplicationMain is available for watchOS 7.0+
-        .visionOS(.v1),
-    ]
-}
-
-var sharedSwiftSettings: [SwiftSetting] = [
-    .enableUpcomingFeature("BareSlashRegexLiterals"),
-    .enableExperimentalFeature("AccessLevelOnImport"),
-    .enableUpcomingFeature("InternalImportsByDefault"),
-    .define("OPENSWIFTUI_SUPPRESS_DEPRECATED_WARNINGS"),
-    .define("OPENSWIFTUI_RELEASE_\(releaseVersion)"),
-]
-
-if releaseVersion >= 2021 {
-    for year in 2021 ... releaseVersion {
-        sharedSwiftSettings.append(.define("OPENSWIFTUI_SUPPORT_\(year)_API"))
-    }
-}
-
-let warningsAsErrorsCondition = envEnable("OPENSWIFTUI_WERROR", default: isXcodeEnv && development)
-if warningsAsErrorsCondition {
-    sharedSwiftSettings.append(.unsafeFlags(["-warnings-as-errors"]))
-}
-
-let openSwiftUICoreTarget = Target.target(
-    name: "OpenSwiftUICore",
-    dependencies: [
-        "OpenSwiftUI_SPI",
-        .product(name: "OpenGraphShims", package: "OpenGraph"),
-    ],
-    swiftSettings: sharedSwiftSettings
-)
-let openSwiftUITarget = Target.target(
-    name: "OpenSwiftUI",
-    dependencies: [
-        "OpenSwiftUICore",
-        .target(name: "CoreServices", condition: .when(platforms: [.iOS])),
-        .product(name: "OpenGraphShims", package: "OpenGraph"),
-    ],
-    swiftSettings: sharedSwiftSettings
-)
-let openSwiftUIExtensionTarget = Target.target(
-    name: "OpenSwiftUIExtension",
-    dependencies: [
-        "OpenSwiftUI",
-    ],
-    swiftSettings: sharedSwiftSettings
-)
-let openSwiftUICoreTestTarget = Target.testTarget(
-    name: "OpenSwiftUICoreTests",
-    dependencies: [
-        "OpenSwiftUICore",
-    ],
-    exclude: ["README.md"],
-    swiftSettings: sharedSwiftSettings
-)
-let openSwiftUITestTarget = Target.testTarget(
-    name: "OpenSwiftUITests",
-    dependencies: [
-        "OpenSwiftUI",
-    ],
-    exclude: ["README.md"],
-    swiftSettings: sharedSwiftSettings
-)
-let openSwiftUICompatibilityTestTarget = Target.testTarget(
-    name: "OpenSwiftUICompatibilityTests",
-    exclude: ["README.md"],
-    swiftSettings: sharedSwiftSettings
-)
-
-let swiftBinPath = Context.environment["_"] ?? "/usr/bin/swift"
-let swiftBinURL = URL(fileURLWithPath: swiftBinPath)
-let SDKPath = swiftBinURL.deletingLastPathComponent().deletingLastPathComponent().deletingLastPathComponent().path
-let includePath = SDKPath.appending("/usr/lib/swift")
-
-let package = Package(
-    name: "OpenSwiftUI",
-    platforms: platforms,
-    products: [
-        .library(name: "OpenSwiftUI", targets: ["OpenSwiftUI", "OpenSwiftUIExtension"]),
-        // FIXME: This will block xcodebuild build(iOS CI) somehow
-        // .library(name: "OpenSwiftUI_SPI", targets: ["OpenSwiftUI_SPI"]),
-    ],
-    targets: [
-        // TODO: Add SwiftGTK as an backend alternative for UIKit/AppKit on Linux and macOS
-        .systemLibrary(
-            name: "CGTK",
-            pkgConfig: "gtk4",
-            providers: [
-                .brew(["gtk4"]),
-                .apt(["libgtk-4-dev clang"]),
-            ]
-        ),
-        .target(
-            name: "OpenSwiftUI_SPI",
-            publicHeadersPath: ".",
-            cSettings: [
-                .unsafeFlags(["-I", includePath], .when(platforms: .nonDarwinPlatforms)),
-                .define("__COREFOUNDATION_FORSWIFTFOUNDATIONONLY__", to: "1", .when(platforms: .nonDarwinPlatforms)),
-                .define("_WASI_EMULATED_SIGNAL", .when(platforms: [.wasi])),
-            ]
-        ),
-        .binaryTarget(name: "CoreServices", path: "PrivateFrameworks/CoreServices.xcframework"),
-        openSwiftUICoreTarget,
-        openSwiftUITarget,
-        openSwiftUIExtensionTarget,
-    ]
-)
-
-#if os(macOS)
-let attributeGraphCondition = envEnable("OPENGRAPH_ATTRIBUTEGRAPH", default: true)
-#else
-let attributeGraphCondition = envEnable("OPENGRAPH_ATTRIBUTEGRAPH")
-#endif
-
-extension Target {
-    func addAGSettings() {
-        // FIXME: Weird SwiftPM behavior for test Target. Otherwize we'll get the following error message
-        // "could not determine executable path for bundle 'AttributeGraph.framework'"
-        dependencies.append(.product(name: "AttributeGraph", package: "OpenGraph"))
-        var swiftSettings = swiftSettings ?? []
-        swiftSettings.append(.define("OPENGRAPH_ATTRIBUTEGRAPH"))
-        self.swiftSettings = swiftSettings
-    }
-
-    func addOpenCombineSettings() {
-        dependencies.append(.product(name: "OpenCombine", package: "OpenCombine"))
-        var swiftSettings = swiftSettings ?? []
-        swiftSettings.append(.define("OPENSWIFTUI_OPENCOMBINE"))
-        self.swiftSettings = swiftSettings
-    }
-
-    func addSwiftLogSettings() {
-        dependencies.append(.product(name: "Logging", package: "swift-log"))
-        var swiftSettings = swiftSettings ?? []
-        swiftSettings.append(.define("OPENSWIFTUI_SWIFT_LOG"))
-        self.swiftSettings = swiftSettings
-    }
-
-    func addSwiftCryptoSettings() {
-        dependencies.append(.product(name: "Crypto", package: "swift-crypto"))
-        var swiftSettings = swiftSettings ?? []
-        swiftSettings.append(.define("OPENSWIFTUI_SWIFT_CRYPTO"))
-        self.swiftSettings = swiftSettings
-    }
-    
-    func addSwiftTestingSettings() {
-        dependencies.append(.product(name: "Testing", package: "swift-testing"))
-        var swiftSettings = swiftSettings ?? []
-        swiftSettings.append(.define("OPENSWIFTUI_SWIFT_TESTING"))
-        self.swiftSettings = swiftSettings
-    }
-}
-
-if attributeGraphCondition {
-    openSwiftUICoreTarget.addAGSettings()
-    openSwiftUITarget.addAGSettings()
-    openSwiftUICoreTestTarget.addAGSettings()
-    openSwiftUITestTarget.addAGSettings()
-    openSwiftUICompatibilityTestTarget.addAGSettings()
-}
-
-#if os(macOS)
-let openCombineCondition = envEnable("OPENSWIFTUI_OPENCOMBINE")
-#else
-let openCombineCondition = envEnable("OPENSWIFTUI_OPENCOMBINE", default: true)
-#endif
-if openCombineCondition {
-    package.dependencies.append(
-        .package(url: "https://github.com/OpenSwiftUIProject/OpenCombine.git", from: "0.15.0")
-    )
-    openSwiftUICoreTarget.addOpenCombineSettings()
-    openSwiftUITarget.addOpenCombineSettings()
-}
-
-#if os(macOS)
-let swiftLogCondition = envEnable("OPENSWIFTUI_SWIFT_LOG")
-#else
-let swiftLogCondition = envEnable("OPENSWIFTUI_SWIFT_LOG", default: true)
-#endif
-if swiftLogCondition {
-    package.dependencies.append(
-        .package(url: "https://github.com/apple/swift-log", from: "1.5.3")
-    )
-    openSwiftUICoreTarget.addSwiftLogSettings()
-    openSwiftUITarget.addSwiftLogSettings()
-}
-
-#if os(macOS)
-let swiftCryptoCondition = envEnable("OPENSWIFTUI_SWIFT_CRYPTO")
-#else
-let swiftCryptoCondition = envEnable("OPENSWIFTUI_SWIFT_CRYPTO", default: true)
-#endif
-if swiftCryptoCondition {
-    package.dependencies.append(
-        .package(url: "https://github.com/apple/swift-crypto.git", from: "3.8.0")
-    )
-    openSwiftUICoreTarget.addSwiftCryptoSettings()
-    openSwiftUITarget.addSwiftCryptoSettings()
-}
-
-// Remove the check when swift-testing reaches 1.0.0
-let swiftTestingCondition = envEnable("OPENSWIFTUI_SWIFT_TESTING")
-if swiftTestingCondition {
-    package.dependencies.append(
-        // Fix it to be 0.3.0 before we bump to Swift 5.10
-        .package(url: "https://github.com/apple/swift-testing", exact: "0.6.0")
-    )
-    openSwiftUICoreTestTarget.addSwiftTestingSettings()
-    openSwiftUITestTarget.addSwiftTestingSettings()
-    openSwiftUICompatibilityTestTarget.addSwiftTestingSettings()
-
-    package.targets.append(openSwiftUICoreTestTarget)
-    package.targets.append(openSwiftUITestTarget)
-    package.targets.append(openSwiftUICompatibilityTestTarget)
-}
-
-let compatibilityTestCondition = envEnable("OPENSWIFTUI_COMPATIBILITY_TEST")
-if compatibilityTestCondition {
-    var swiftSettings: [SwiftSetting] = (openSwiftUICompatibilityTestTarget.swiftSettings ?? [])
-    swiftSettings.append(.define("OPENSWIFTUI_COMPATIBILITY_TEST"))
-    openSwiftUICompatibilityTestTarget.swiftSettings = swiftSettings
-} else {
-    openSwiftUICompatibilityTestTarget.dependencies.append("OpenSwiftUI")
-}
-
-let useLocalDeps = envEnable("OPENSWIFTUI_USE_LOCAL_DEPS")
-if useLocalDeps {
-    package.dependencies += [
-        .package(path: "../OpenGraph"),
-    ]
-} else {
-    package.dependencies += [
-        // FIXME: on Linux platform: OG contains unsafe build flags which prevents us using version dependency
-        .package(url: "https://github.com/OpenSwiftUIProject/OpenGraph", branch: "main"),
-    ]
-}
-
-extension [Platform] {
-    static var nonDarwinPlatforms: [Platform] {
-        [.linux, .android, .wasi, .openbsd, .windows]
-    }
-}
diff --git a/Sources/OpenSwiftUICore/Data/Protobuf/ProtobufEncoder.swift b/Sources/OpenSwiftUICore/Data/Protobuf/ProtobufEncoder.swift
index 282aca34..357e0e75 100644
--- a/Sources/OpenSwiftUICore/Data/Protobuf/ProtobufEncoder.swift
+++ b/Sources/OpenSwiftUICore/Data/Protobuf/ProtobufEncoder.swift
@@ -741,7 +741,6 @@ extension ProtobufEncoder {
         encodeVarintZZ(Int(value))
     }
     
-    #if compiler(>=6.0)
     /// Encodes a bitwise copyable value.
     ///
     /// - Parameters:
@@ -757,23 +756,6 @@ extension ProtobufEncoder {
             buffer.advanced(by: oldSize).storeBytes(of: value, as: T.self)
         }
     }
-    #else // FIXME: Remove this after we drop WASI 5.10 support
-    /// Encodes a bitwise copyable value.
-    ///
-    /// - Parameters:
-    ///   - value: The value to encode.
-    @inline(__always)
-    private mutating func encodeBitwiseCopyable<T>(_ value: T) {
-        let oldSize = size
-        let newSize = oldSize + MemoryLayout<T>.size
-        if capacity < newSize {
-            growBufferSlow(to: newSize).storeBytes(of: value, as: T.self)
-        } else {
-            size = newSize
-            buffer.advanced(by: oldSize).storeBytes(of: value, as: T.self)
-        }
-    }
-    #endif
     
     /// Encodes a boolean value.
     ///
diff --git a/Tests/OpenSwiftUICompatibilityTests/Scaffolding.swift b/Tests/OpenSwiftUICompatibilityTests/Scaffolding.swift
deleted file mode 100644
index a2c1ae11..00000000
--- a/Tests/OpenSwiftUICompatibilityTests/Scaffolding.swift
+++ /dev/null
@@ -1,18 +0,0 @@
-//
-//  Scaffolding.swift
-//
-//
-//  Created by Kyle on 2024/1/4.
-//
-
-import Testing
-import XCTest
-
-#if compiler(<6.0)
-// FIXME: Leave Scaffolding since we still use 5.10 toolchain on non-Darwin platform
-final class AllTests: XCTestCase {
-    func testAll() async {
-        await XCTestScaffold.runAllTests(hostedBy: self)
-    }
-}
-#endif
diff --git a/Tests/OpenSwiftUICoreTests/Scaffolding.swift b/Tests/OpenSwiftUICoreTests/Scaffolding.swift
deleted file mode 100644
index 43ada21a..00000000
--- a/Tests/OpenSwiftUICoreTests/Scaffolding.swift
+++ /dev/null
@@ -1,18 +0,0 @@
-//
-//  Scaffolding.swift
-//
-//
-//  Created by Kyle on 2023/11/8.
-//
-
-import Testing
-import XCTest
-
-#if compiler(<6.0)
-// FIXME: Leave Scaffolding since we still use 5.10 toolchain on non-Darwin platform
-final class AllTests: XCTestCase {
-    func testAll() async {
-        await XCTestScaffold.runAllTests(hostedBy: self)
-    }
-}
-#endif
diff --git a/Tests/OpenSwiftUITests/Scaffolding.swift b/Tests/OpenSwiftUITests/Scaffolding.swift
deleted file mode 100644
index 43ada21a..00000000
--- a/Tests/OpenSwiftUITests/Scaffolding.swift
+++ /dev/null
@@ -1,18 +0,0 @@
-//
-//  Scaffolding.swift
-//
-//
-//  Created by Kyle on 2023/11/8.
-//
-
-import Testing
-import XCTest
-
-#if compiler(<6.0)
-// FIXME: Leave Scaffolding since we still use 5.10 toolchain on non-Darwin platform
-final class AllTests: XCTestCase {
-    func testAll() async {
-        await XCTestScaffold.runAllTests(hostedBy: self)
-    }
-}
-#endif
diff --git a/Tests/OpenSwiftUI_SPITests/Scaffolding.swift b/Tests/OpenSwiftUI_SPITests/Scaffolding.swift
deleted file mode 100644
index 43ada21a..00000000
--- a/Tests/OpenSwiftUI_SPITests/Scaffolding.swift
+++ /dev/null
@@ -1,18 +0,0 @@
-//
-//  Scaffolding.swift
-//
-//
-//  Created by Kyle on 2023/11/8.
-//
-
-import Testing
-import XCTest
-
-#if compiler(<6.0)
-// FIXME: Leave Scaffolding since we still use 5.10 toolchain on non-Darwin platform
-final class AllTests: XCTestCase {
-    func testAll() async {
-        await XCTestScaffold.runAllTests(hostedBy: self)
-    }
-}
-#endif