diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f258e14..bf83009 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,3 +34,34 @@ jobs:
 
       - name: Test
         run: dotnet test translator/Translator.sln -c Release --no-build --verbosity normal
+
+  macos_substrate:
+    name: macOS arm64 (configure + substrate tests)
+    runs-on: macos-14
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          persist-credentials: false
+
+      - name: Configure native runtime
+        shell: bash
+        run: |
+          test "$(uname -m)" = arm64
+          cmake -S runtime -B build-macos -G Ninja \
+            -DCMAKE_BUILD_TYPE=Release -DMKW_BUILD_PRODUCTS=OFF
+          grep -qx 'CMAKE_OSX_DEPLOYMENT_TARGET:STRING=14.0' \
+            build-macos/CMakeCache.txt
+
+      - name: Build macOS portability targets
+        shell: bash
+        run: |
+          cmake --build build-macos --target \
+            mkw_platform_paths_tests \
+            mkw_macos_native_compile \
+            mkw_macos_context_abi_tests \
+            mkw_macos_host_context_tests \
+            mkw_macos_guest_flat_memory_tests
+
+      - name: Test execution substrate
+        shell: bash
+        run: ctest --test-dir build-macos --output-on-failure
diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index 742418f..e65abd6 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -1,8 +1,8 @@
 name: Package installers
 
 # Builds the per-platform installer/setup tool (WiiCompiled-Setup.exe /
-# WiiCompiled-Setup-x86_64.AppImage) via Launcher/Build-Installer.ps1 and
-# Launcher/build-appimage.sh respectively - the same scripts a maintainer runs by hand today to
+# WiiCompiled-Setup-x86_64.AppImage / WiiCompiled-Setup.pkg) via the platform packaging scripts -
+# the same scripts a maintainer runs by hand today to
 # produce a GitHub Release asset. This does NOT build the actual translated game executable:
 # that step requires the end user's own Mario Kart Wii dump (Assets/main.dol, Assets/StaticR.rel),
 # which is proprietary and not present in this repository or in CI.
@@ -11,6 +11,11 @@ on:
     tags:
       - '*'
   workflow_dispatch:
+    inputs:
+      version:
+        description: Package version
+        required: true
+        type: string
 
 permissions:
   contents: read
@@ -86,14 +91,99 @@ jobs:
           if-no-files-found: error
           archive: false
 
+  macos-setup-package:
+    name: macOS (Setup.pkg, Apple Silicon)
+    runs-on: macos-14
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          persist-credentials: false
+
+      - uses: actions/setup-dotnet@v6
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Verify Apple Silicon runner tools
+        shell: bash
+        run: |
+          test "$(uname -m)" = arm64
+          xcode-select -p
+          command -v ninja
+          file "$(command -v ninja)" | grep -q arm64
+
+      - name: Download pinned nodtool release
+        shell: bash
+        run: |
+          mkdir -p Launcher/artifacts/macos
+          nodtool_version=v2.0.0-alpha.10
+          nodtool_asset=nodtool-macos-arm64
+          nodtool_sha256=e23ca466999b720c55e6d29c9683fce8cc74451ba64ead2e543d50129f24528a
+          curl -fsSL --retry 3 \
+            "https://github.com/encounter/nod/releases/download/${nodtool_version}/${nodtool_asset}" \
+            -o Launcher/artifacts/macos/nodtool
+          printf '%s  %s\n' "$nodtool_sha256" Launcher/artifacts/macos/nodtool | shasum -a 256 -c -
+          chmod +x Launcher/artifacts/macos/nodtool
+          Launcher/artifacts/macos/nodtool --version
+
+      - name: Publish self-contained translator
+        shell: bash
+        run: |
+          dotnet publish translator/src/Translator.Cli/Translator.Cli.csproj \
+            -c Release -r osx-arm64 --self-contained true \
+            -p:PublishSingleFile=true \
+            -o Launcher/artifacts/macos/translator
+
+      - name: Download pinned portable CMake
+        shell: bash
+        run: |
+          cmake_version=4.4.3
+          archive="cmake-${cmake_version}-macos-universal.tar.gz"
+          base_url="https://github.com/Kitware/CMake/releases/download/v${cmake_version}"
+          expected_sha256=0c5d65251c14cc884bfa16bdbed3c263ce5bffe2e21c0d0d00962cb0610464fa
+          curl -fsSL --retry 3 "$base_url/$archive" -o "$archive"
+          printf '%s  %s\n' "$expected_sha256" "$archive" | shasum -a 256 -c -
+          tar -xzf "$archive"
+          mv "cmake-${cmake_version}-macos-universal/CMake.app/Contents" Launcher/artifacts/macos/cmake
+
+      - name: Build Setup.pkg
+        env:
+          PACKAGE_VERSION: ${{ inputs.version }}
+          TAG_VERSION: ${{ github.ref_name }}
+        shell: bash
+        run: |
+          package_version="$PACKAGE_VERSION"
+          if [[ -z "$package_version" ]]; then package_version="${TAG_VERSION#v}"; fi
+          mkdir -p Launcher/dist
+          Launcher/macos/build-setup-pkg.command \
+            --nodtool Launcher/artifacts/macos/nodtool \
+            --translator Launcher/artifacts/macos/translator/Translator.Cli \
+            --cmake-root Launcher/artifacts/macos/cmake \
+            --ninja "$(command -v ninja)" \
+            --output Launcher/dist/WiiCompiled-Setup.pkg \
+            --version "$package_version"
+
+      - name: Verify package boundary
+        shell: bash
+        run: |
+          pkgutil --check-signature Launcher/dist/WiiCompiled-Setup.pkg
+          ! pkgutil --payload-files Launcher/dist/WiiCompiled-Setup.pkg | \
+            grep -E '/(Assets|generated|PulsarPacks|WiiCompiled.app|RetroRewind.app)(/|$)'
+
+      - uses: actions/upload-artifact@v7
+        with:
+          name: WiiCompiled-Setup-macos-arm64
+          path: Launcher/dist/WiiCompiled-Setup.pkg
+          if-no-files-found: error
+          archive: false
+
   # Publishes the packaged installers as a GitHub Release whenever a v* tag is pushed. Wheel Wizard
   # discovers updates from these releases, so the contract it relies on is enforced here: a full
-  # (non-prerelease) release whose tag is v<semver>, carrying an asset named exactly
-  # WiiCompiled-Setup.exe, produced by a setup host that reports that same version.
+  # (non-prerelease) release whose tag is v<semver>, carrying the expected platform assets,
+  # produced by setup hosts that report that same version.
   release:
     name: Publish GitHub Release
     if: startsWith(github.ref, 'refs/tags/v')
-    needs: [linux-appimage, windows-installer]
+    needs: [linux-appimage, windows-installer, macos-setup-package]
     runs-on: ubuntu-latest
     permissions:
       contents: write
@@ -139,7 +229,7 @@ jobs:
           set -euo pipefail
           ls -lR artifacts
           assets=()
-          for name in WiiCompiled-Setup.exe WiiCompiled-Setup-x86_64.AppImage WiiCompiled-Setup-aarch64.AppImage; do
+          for name in WiiCompiled-Setup.exe WiiCompiled-Setup-x86_64.AppImage WiiCompiled-Setup-aarch64.AppImage WiiCompiled-Setup.pkg; do
             found="$(find artifacts -type f -name "$name" | head -n 1)"
             [ -n "$found" ] && [ -s "$found" ] || { echo "::error::missing release asset $name"; exit 1; }
             assets+=("$found")
diff --git a/Launcher/local-build-macos.command b/Launcher/local-build-macos.command
index 1f91b0c..2b2ec91 100755
--- a/Launcher/local-build-macos.command
+++ b/Launcher/local-build-macos.command
@@ -131,7 +131,9 @@ if (( builds_retro )); then args+=(--resolved-profile "$mod_out/resolved_dispatc
 step emit-build-shards 'Preparing native build shards'; translator "${args[@]}"
 
 step configure-native 'Configuring the native toolchain'
-"$cmake_bin" -S "$workspace/runtime" -B "$native_build" -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_MAKE_PROGRAM="$ninja_bin" -DMKW_TRANSLATED_COMPILE_JOBS="$translated_jobs"
+# Use Aurora's pinned SDL3 source on macOS.  A system SDL3 can be older than
+# Aurora's required API even when find_package() succeeds.
+"$cmake_bin" -S "$workspace/runtime" -B "$native_build" -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_MAKE_PROGRAM="$ninja_bin" -DMKW_TRANSLATED_COMPILE_JOBS="$translated_jobs" -DAURORA_SDL3_PROVIDER=vendor
 targets=(); [[ "$profile" != retro-rewind ]] && targets+=(WiiCompiled); [[ "$profile" != base ]] && targets+=(RetroRewind)
 step compile "Compiling ${targets[*]} locally"; "$cmake_bin" --build "$native_build" --target "${targets[@]}" --parallel "$global_jobs"
 if [[ "$profile" != retro-rewind ]]; then "$script_dir/macos/publish-app.command" --build-dir "$native_build" --product WiiCompiled --output-dir "${base_output_dir:-$output_dir}"; fi
diff --git a/Launcher/macos/build-setup-pkg.command b/Launcher/macos/build-setup-pkg.command
index 50082c9..22efb2b 100755
--- a/Launcher/macos/build-setup-pkg.command
+++ b/Launcher/macos/build-setup-pkg.command
@@ -103,6 +103,9 @@ copy_clean "$workspace/Launcher/local-build-macos.command" "$resources/workspace
 copy_clean "$workspace/Launcher/macos/extract-disc.command" "$resources/workspace/Launcher/macos/extract-disc.command"
 copy_clean "$workspace/Launcher/macos/publish-app.command" "$resources/workspace/Launcher/macos/publish-app.command"
 chmod +x "$resources/workspace/Launcher/local-build-macos.command" "$resources/workspace/Launcher/macos/"*.command
+# setup.command uses this marker to update source inputs in an existing user
+# workspace without replacing extracted game assets or Retro Rewind files.
+printf '%s\n' "$version" > "$resources/workspace/.bundle-version"
 mkdir -p "$resources/tools/cmake"
 copy_clean "$nodtool" "$resources/tools/nodtool"; chmod +x "$resources/tools/nodtool"
 copy_clean "$translator" "$resources/tools/Translator.Cli"; chmod +x "$resources/tools/Translator.Cli"
diff --git a/Launcher/macos/setup.command b/Launcher/macos/setup.command
index 8676e7a..5694a57 100755
--- a/Launcher/macos/setup.command
+++ b/Launcher/macos/setup.command
@@ -62,10 +62,30 @@ if ! /usr/bin/xcode-select -p >/dev/null 2>&1; then
 fi
 
 mkdir -p "$support_root" "$products"
-if [[ ! -d "$workspace/.git" && ! -f "$workspace/projects/mkwii/recomp.yml" ]]; then
+source_bundle_version="$workspace_source/.bundle-version"
+workspace_bundle_version="$workspace/.bundle-version"
+needs_workspace_refresh=0
+if [[ ! -f "$workspace/projects/mkwii/recomp.yml" ]]; then
+    needs_workspace_refresh=1
+elif [[ -f "$source_bundle_version" ]] && [[ ! -f "$workspace_bundle_version" || "$(<"$source_bundle_version")" != "$(<"$workspace_bundle_version")" ]]; then
+    needs_workspace_refresh=1
+fi
+
+if (( needs_workspace_refresh )); then
     printf 'Preparing the local build workspace...\n'
-    rm -rf "$workspace"
-    /usr/bin/ditto "$workspace_source" "$workspace"
+    if [[ ! -d "$workspace" ]]; then
+        /usr/bin/ditto "$workspace_source" "$workspace"
+    else
+        # Refresh only packaged source inputs. Assets and the staged Retro
+        # Rewind package belong to the user and stay in place.
+        for source in aurora-main projects runtime translator Launcher; do
+            /usr/bin/ditto "$workspace_source/$source" "$workspace/$source"
+        done
+        /usr/bin/ditto "$source_bundle_version" "$workspace_bundle_version"
+        # A dependency provider can be cached in this directory, so make the
+        # refreshed sources configure from a clean native build tree.
+        rm -rf "$workspace/native-build-macos"
+    fi
 fi
 
 profile=base
diff --git a/README.md b/README.md
index d616cb4..4a7be5f 100644
--- a/README.md
+++ b/README.md
@@ -111,6 +111,21 @@ image under Settings, turn on **WiiCompiled (beta)**, and hit install from the H
 Wheel Wizard downloads the setup tool from this repo and walks you through install, updates and
 launching. The backend itself is deliberately command-line only, Wheel Wizard is a wrapper around it.
 
+### macOS
+
+Download `WiiCompiled-Setup.pkg` from this repository's Releases page and open it. It requires an
+Apple Silicon Mac because its bundled nodtool and Translator.Cli executables are arm64. It installs
+**WiiCompiled Setup** in Applications; open that app, choose your clean PAL `RMCP01` disc image,
+and select either the base game or Retro Rewind. For Retro Rewind, choose the `RetroRewind6` folder
+or its parent folder.
+
+Setup verifies and extracts the image locally, then translates and compiles the native app on your
+Mac. On a first run it may ask macOS to install Xcode Command Line Tools; complete Apple's installer,
+then open Setup again. When the build completes, Setup asks for administrator approval once to install
+`WiiCompiled.app` (and, if selected, `RetroRewind.app`) in `/Applications`.
+
+Setup opens Terminal while it works, so the extraction and build progress—and any error that needs
+reporting—remain visible.
 
 > [!CAUTION]
 > Only take builds from this repository's
diff --git a/aurora-main/cmake/AuroraSDL3Provider.cmake b/aurora-main/cmake/AuroraSDL3Provider.cmake
index 16ce933..7f3de51 100644
--- a/aurora-main/cmake/AuroraSDL3Provider.cmake
+++ b/aurora-main/cmake/AuroraSDL3Provider.cmake
@@ -41,7 +41,10 @@ if (_aurora_sdl3_provider STREQUAL "auto")
     set(_aurora_sdl3_provider "package")
   else ()
     set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL ON)
-    find_package(SDL3 QUIET)
+    # Aurora uses APIs from the SDL version pinned by AURORA_SDL3_VERSION.
+    # Do not silently select an older system package and fail later while
+    # compiling its headers.
+    find_package(SDL3 ${AURORA_SDL3_VERSION} QUIET)
     set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL OFF)
     if (SDL3_FOUND)
       set(_aurora_sdl3_provider "system")
@@ -58,7 +61,7 @@ if (_aurora_sdl3_provider STREQUAL "system")
   message(STATUS "aurora: Using system SDL3 (provider=system)")
   if (NOT SDL3_FOUND)
     set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL ON)
-    find_package(SDL3 REQUIRED)
+    find_package(SDL3 ${AURORA_SDL3_VERSION} REQUIRED)
     set(CMAKE_FIND_PACKAGE_TARGETS_GLOBAL OFF)
   endif ()
   _aurora_sdl3_select_target()
diff --git a/aurora-main/lib/dolphin/pad/pad.cpp b/aurora-main/lib/dolphin/pad/pad.cpp
index bb82c24..b06c489 100644
--- a/aurora-main/lib/dolphin/pad/pad.cpp
+++ b/aurora-main/lib/dolphin/pad/pad.cpp
@@ -1438,7 +1438,10 @@ void __PADWriteDeadZones(SDL_IOStream* file, // NOLINT(*-reserved-identifier)
 void PADSerializeMappings() {
   const std::filesystem::path basePath = fs_path_from_string(aurora::g_config.userPath);
 
-  for (auto& controller : aurora::input::g_GameControllers | std::views::values) {
+  // Avoid std::views::values here: older Apple libc++ releases implement the
+  // C++20 ranges algorithms we use but not this adaptor.
+  for (auto& entry : aurora::input::g_GameControllers) {
+    auto& controller = entry.second;
     EnsureMappingLoaded(&controller);
     const auto filePath =
         basePath / fmt::format("{}_{:04X}_{:04X}.controller", aurora::input::controller_name(controller.m_index),
diff --git a/aurora-main/lib/system_info.cpp b/aurora-main/lib/system_info.cpp
index 15a58d4..9197cd0 100644
--- a/aurora-main/lib/system_info.cpp
+++ b/aurora-main/lib/system_info.cpp
@@ -235,7 +235,7 @@ std::string GetOSVersion() {
   constexpr auto name = "iOS";
 #elif TARGET_OS_TV
   constexpr auto name = "tvOS";
-#elif
+#else
   constexpr auto name = Unknown;
 #endif
 
diff --git a/runtime/CMakeLists.txt b/runtime/CMakeLists.txt
index be057c7..a6d383b 100644
--- a/runtime/CMakeLists.txt
+++ b/runtime/CMakeLists.txt
@@ -17,6 +17,16 @@ else()
     message(FATAL_ERROR
         "WiiCompiled supports 64-bit LLVM-MinGW Clang on Windows, native Linux x86_64/aarch64, or Apple Clang on macOS arm64")
 endif()
+
+# Do not inherit the host SDK's deployment target (macOS 26 on current
+# toolchains). The supported Apple Silicon release is macOS 14 and the app
+# bundle advertises that same minimum. This remains arm64-only until the Intel
+# support work is merged.
+if(MKW_PLATFORM_MACOS)
+    set(CMAKE_OSX_DEPLOYMENT_TARGET "14.0" CACHE STRING
+        "Minimum macOS version for the Apple Silicon build" FORCE)
+endif()
+
 if(NOT CMAKE_BUILD_TYPE STREQUAL "Release")
     message(FATAL_ERROR "WiiCompiled only supports Release builds")
 endif()