diff --git a/.github/scripts/prebuild.ps1 b/.github/scripts/prebuild.ps1
new file mode 100644
index 000000000..8c96dba05
--- /dev/null
+++ b/.github/scripts/prebuild.ps1
@@ -0,0 +1,29 @@
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the Swift open source project
+##
+## Copyright (c) 2025 Apple Inc. and the Swift project authors
+## Licensed under Apache License v2.0 with Runtime Library Exception
+##
+## See http://swift.org/LICENSE.txt for license information
+## See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+##
+##===----------------------------------------------------------------------===##
+
+param (
+    [switch]$InstallCMake
+)
+
+# winget isn't easily made available in containers, so use chocolatey
+Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
+
+if ($InstallCMake) {
+    choco install -y cmake --installargs 'ADD_CMAKE_TO_PATH=System' --apply-install-arguments-to-dependencies
+    choco install -y ninja
+
+    Import-Module $env:ChocolateyInstall\helpers\chocolateyProfile.psm1
+    refreshenv
+
+    # Let swiftc find the path to link.exe in the CMake smoke test
+    $env:Path += ";$(Split-Path -Path "$(& "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe" "-latest" -products Microsoft.VisualStudio.Product.BuildTools -find VC\Tools\MSVC\*\bin\HostX64\x64\link.exe)" -Parent)"
+}
diff --git a/.github/scripts/prebuild.sh b/.github/scripts/prebuild.sh
new file mode 100755
index 000000000..b92d2d606
--- /dev/null
+++ b/.github/scripts/prebuild.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the Swift open source project
+##
+## Copyright (c) 2025 Apple Inc. and the Swift project authors
+## Licensed under Apache License v2.0 with Runtime Library Exception
+##
+## See http://swift.org/LICENSE.txt for license information
+## See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+##
+##===----------------------------------------------------------------------===##
+
+set -e
+
+if [[ $(uname) == Darwin ]] ; then
+    if [[ "$INSTALL_CMAKE" == "1" ]] ; then
+        mkdir -p "$RUNNER_TOOL_CACHE"
+        if ! command -v cmake >/dev/null 2>&1 ; then
+            curl -fsSLO https://github.com/Kitware/CMake/releases/download/v4.1.2/cmake-4.1.2-macos-universal.tar.gz
+            echo '3be85f5b999e327b1ac7d804cbc9acd767059e9f603c42ec2765f6ab68fbd367 cmake-4.1.2-macos-universal.tar.gz' > cmake-4.1.2-macos-universal.tar.gz.sha256
+            sha256sum -c cmake-4.1.2-macos-universal.tar.gz.sha256
+            tar -xf cmake-4.1.2-macos-universal.tar.gz
+            ln -s "$PWD/cmake-4.1.2-macos-universal/CMake.app/Contents/bin/cmake" "$RUNNER_TOOL_CACHE/cmake"
+        fi
+        if ! command -v ninja >/dev/null 2>&1 ; then
+            curl -fsSLO https://github.com/ninja-build/ninja/releases/download/v1.13.1/ninja-mac.zip
+            echo 'da7797794153629aca5570ef7c813342d0be214ba84632af886856e8f0063dd9 ninja-mac.zip' > ninja-mac.zip.sha256
+            sha256sum -c ninja-mac.zip.sha256
+            unzip ninja-mac.zip
+            rm -f ninja-mac.zip
+            mv ninja "$RUNNER_TOOL_CACHE/ninja"
+        fi
+    fi
+elif command -v apt-get >/dev/null 2>&1 ; then # bookworm, noble, jammy
+    export DEBIAN_FRONTEND=noninteractive
+
+    apt-get update -y
+
+    # Debug symbols
+    apt-get install -y libc6-dbg
+
+    if [[ "$INSTALL_CMAKE" == "1" ]] ; then
+        apt-get install -y cmake ninja-build
+    fi
+elif command -v dnf >/dev/null 2>&1 ; then # rhel-ubi9
+    dnf update -y
+
+    # Debug symbols
+    dnf debuginfo-install -y glibc
+elif command -v yum >/dev/null 2>&1 ; then # amazonlinux2
+    yum update -y
+
+    # Debug symbols
+    yum install -y yum-utils
+    debuginfo-install -y glibc
+fi
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
new file mode 100644
index 000000000..2f2adae66
--- /dev/null
+++ b/.github/workflows/pull_request.yml
@@ -0,0 +1,49 @@
+name: Pull request
+
+permissions:
+  contents: read
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      linux_os_versions: '["amazonlinux2", "bookworm", "noble", "jammy", "rhel-ubi9"]'
+      linux_pre_build_command: ./.github/scripts/prebuild.sh
+      linux_swift_versions: '["nightly-main", "nightly-6.2"]'
+      windows_pre_build_command: 'Invoke-Program .\.github\scripts\prebuild.ps1'
+      windows_swift_versions: '["nightly-main"]'
+      enable_linux_static_sdk_build: true
+      enable_macos_checks: true
+      macos_exclude_xcode_versions: "[{\"xcode_version\": \"16.3\"}, {\"xcode_version\": \"16.4\"}]"
+      macos_pre_build_command: ./.github/scripts/prebuild.sh
+  cmake-smoke-test:
+    name: cmake-smoke-test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      linux_os_versions: '["noble"]'
+      linux_pre_build_command: INSTALL_CMAKE=1 ./.github/scripts/prebuild.sh
+      linux_build_command: 'swift package -Xbuild-tools-swiftc -DUSE_PROCESS_SPAWNING_WORKAROUND cmake-smoke-test --disable-sandbox --cmake-path `which cmake` --ninja-path `which ninja` --extra-cmake-arg -DCMAKE_C_COMPILER=`which clang` --extra-cmake-arg -DCMAKE_CXX_COMPILER=`which clang++` --extra-cmake-arg -DCMAKE_Swift_COMPILER=`which swiftc`'
+      linux_swift_versions: '["nightly-main"]'
+      enable_macos_checks: true
+      macos_xcode_versions: '["26.0"]'
+      macos_pre_build_command: INSTALL_CMAKE=1 ./.github/scripts/prebuild.sh
+      macos_build_command: 'export PATH=$PATH:$RUNNER_TOOL_CACHE && swift package cmake-smoke-test --disable-sandbox --cmake-path `which cmake` --ninja-path `which ninja` --extra-cmake-arg -DCMAKE_C_COMPILER=`which clang` --extra-cmake-arg -DCMAKE_CXX_COMPILER=`which clang++` --extra-cmake-arg -DCMAKE_Swift_COMPILER=`which swiftc`'
+      windows_pre_build_command: 'Invoke-Program .\.github\scripts\prebuild.ps1 -InstallCMake'
+      windows_swift_versions: '["nightly-main"]'
+      windows_build_command: 'Invoke-Program swift package cmake-smoke-test --disable-sandbox --cmake-path (Get-Command cmake).Path --ninja-path (Get-Command ninja).Path --extra-cmake-arg "-DCMAKE_C_COMPILER=$((Get-Command clang).Path)" --extra-cmake-arg "-DCMAKE_CXX_COMPILER=$((Get-Command clang).Path)" --extra-cmake-arg "-DCMAKE_Swift_COMPILER=$((Get-Command swiftc).Path)" --extra-cmake-arg "-DCMAKE_STATIC_LIBRARY_PREFIX_Swift=lib" --extra-cmake-arg "-DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDLL"'
+
+  soundness:
+    name: Soundness
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+    with:
+      license_header_check_project_name: "Swift"
+      api_breakage_check_enabled: false