diff --git a/.github/workflows/build_release.yml b/.github/workflows/build_release.yml
index 7519af5e..e03ec3dd 100644
--- a/.github/workflows/build_release.yml
+++ b/.github/workflows/build_release.yml
@@ -18,8 +18,8 @@ env:
   SWIFTLY_BOOTSTRAP_VERSION: 1.0.0
 
 jobs:
-  buildrelease:
-    name: Build Release
+  buildrelease-linux:
+    name: Build Release / Linux x86_64
     runs-on: ubuntu-latest
     container:
       image: "redhat/ubi9"
@@ -44,3 +44,20 @@ jobs:
           name: swiftly-docs
           path: .build/docs/**
           if-no-files-found: error
+
+  buildrelease-macos:
+    name: Build Release / macOS
+    runs-on: [self-hosted, macos, sequoia, ARM64]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Prepare the action
+        run: ./scripts/prep-gh-action.sh --install-swiftly
+      - name: Build Release Artifact
+        run: swift run build-swiftly-release ${{ inputs.skip }} ${{ inputs.version }}
+      - name: Upload Release Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: swiftly-release-x86_64
+          path: .build/release/swiftly-*.tar.gz
+          if-no-files-found: error
diff --git a/.github/workflows/nightly_snapshot_check.yml b/.github/workflows/nightly_snapshot_check.yml
index 6a395cd9..be05bba3 100644
--- a/.github/workflows/nightly_snapshot_check.yml
+++ b/.github/workflows/nightly_snapshot_check.yml
@@ -8,7 +8,7 @@ env:
   SWIFTLY_BOOTSTRAP_VERSION: 1.0.0
 
 jobs:
-  tests-selfhosted:
+  tests-selfhosted-linux:
     name: Test (Smoke Test - Nightly Swift Toolchain) / ${{ matrix.container }}
     runs-on: ubuntu-latest
     strategy:
@@ -26,3 +26,14 @@ jobs:
         # UBI 9 and Ubuntu 20.04 - See https://github.com/swiftlang/swift/issues/80908
         # UBI 9 - See https://github.com/swiftlang/swift/issues/80909
         run: bash -c 'if [[ "${{ matrix.container }}" == "redhat/ubi9" ]]; then swiftly run +main-snapshot swift build --build-tests; elif [[ "${{ matrix.container }}" == "ubuntu:20.04" ]]; then swiftly run +main-snapshot swift build --build-tests; else swiftly run +main-snapshot swift test; fi'
+
+  tests-selfhosted-macos:
+    name: Test (Smoke Test - Nightly Swift Toolchain) / macOS Sequoia ARM64
+    runs-on: [self-hosted, macos, sequoia, ARM64]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Prepare the action
+        run: ./scripts/prep-gh-action.sh --install-swiftly --swift-main-snapshot
+      - name: Build and Test
+        run: swift test
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 9aff96fb..6b28c1b9 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -7,7 +7,7 @@ on:
     branches: [main]
 
 env:
-  SWIFTLY_BOOTSTRAP_VERSION: 1.0.0
+  SWIFTLY_BOOTSTRAP_VERSION: 1.0.1-dev
 
 jobs:
   soundness:
@@ -22,6 +22,20 @@ jobs:
       shell_check_enabled: false
       unacceptable_language_check_enabled: true
 
+  macos-tests-selfhosted:
+    name: Test (Self Hosted) / macOS Sequoia ARM64
+    runs-on: [self-hosted, macos, sequoia, ARM64]
+    strategy:
+      fail-fast: false
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Prepare the action
+        run: ./scripts/prep-gh-action.sh --install-swiftly
+      - name: Build and Test
+        run: swift test
+        timeout-minutes: 60
+
   tests-selfhosted:
     name: Test (Self Hosted) / ${{ matrix.container }}
     runs-on: ubuntu-latest
@@ -42,7 +56,7 @@ jobs:
         run: bash -c 'if [[ "${{ matrix.container }}" == "redhat/ubi9" ]]; then swift build --build-tests; elif [[ "${{ matrix.container }}" == "ubuntu:20.04" ]]; then swift build --build-tests; else swift test; fi'
 
   releasebuildcheck:
-    name: Release Build Check
+    name: Release Build Check / Linux
     runs-on: ubuntu-latest
     container:
       image: "redhat/ubi9"
@@ -63,11 +77,36 @@ jobs:
       - name: Upload Tests
         uses: actions/upload-artifact@v4
         with:
-          name: swiftly-tests-x86_64
+          name: test-swiftly-linux-x86_64
           path: .build/debug/test-swiftly-linux-x86_64.tar.gz
           if-no-files-found: error
           retention-days: 1
 
+  releasebuildcheckmacos:
+    name: Release Build Check / macOS
+    runs-on: [self-hosted, macos, sequoia, ARM64]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Prepare the action
+        run: ./scripts/prep-gh-action.sh --install-swiftly
+      - name: Build Artifact
+        run: swift run build-swiftly-release --test --skip "999.0.0"
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: swiftly-release-darwin
+          path: .build/release/swiftly-*.pkg
+          if-no-files-found: error
+          retention-days: 1
+      - name: Upload Tests
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-swiftly-macos
+          path: .build/release/test-swiftly-macos.tar.gz
+          if-no-files-found: error
+          retention-days: 1
+
   releasetest:
     name: Test Release / ${{matrix.shell.pkg}}
     needs: releasebuildcheck
@@ -92,7 +131,7 @@ jobs:
       - name: Download Tests
         uses: actions/download-artifact@v4
         with:
-          name: swiftly-tests-x86_64
+          name: test-swiftly-linux-x86_64
       - name: Extract and Run Workflow Tests
         run: cp swiftly-*.tar.gz /root/swiftly.tar.gz && cp test-swiftly-*.tar.gz /root && cd /root && tar zxf test-swiftly-*.tar.gz && ./test-swiftly -y ./swiftly.tar.gz
 
@@ -112,7 +151,7 @@ jobs:
       - name: Download Tests
         uses: actions/download-artifact@v4
         with:
-          name: swiftly-tests-x86_64
+          name: test-swiftly-linux-x86_64
       - name: Extract and Run Workflow Tests
         run: cp swiftly-*.tar.gz /root/swiftly.tar.gz && cp test-swiftly-*.tar.gz /root && cd /root && tar zxf test-swiftly-*.tar.gz && ./test-swiftly -y --custom-location ./swiftly.tar.gz
 
diff --git a/scripts/prep-gh-action.sh b/scripts/prep-gh-action.sh
index 85e4033a..85a420b6 100755
--- a/scripts/prep-gh-action.sh
+++ b/scripts/prep-gh-action.sh
@@ -2,11 +2,13 @@
 
 # This script does a bit of extra preparation of the docker containers used to run the GitHub workflows
 # that are specific to this project's needs when building/testing. Note that this script runs on
-# every supported Linux distribution so it must adapt to the distribution that it is running.
+# every supported Linux distribution and macOS so it must adapt to the distribution that it is running.
 
-# Install the basic utilities depending on the type of Linux distribution
-apt-get --help && apt-get update && TZ=Etc/UTC apt-get -y install curl make gpg tzdata
-yum --help && (curl --help && yum -y install curl) && yum install make gpg
+if [[ "$(uname -s)" == "Linux" ]]; then
+    # Install the basic utilities depending on the type of Linux distribution
+    apt-get --help && apt-get update && TZ=Etc/UTC apt-get -y install curl make gpg tzdata
+    yum --help && (curl --help && yum -y install curl) && yum install make gpg
+fi
 
 set -e
 
@@ -27,14 +29,25 @@ done
 
 if [ "$installSwiftly" == true ]; then
     echo "Installing swiftly"
-    curl -O https://download.swift.org/swiftly/linux/swiftly-${SWIFTLY_BOOTSTRAP_VERSION}-$(uname -m).tar.gz && tar zxf swiftly-*.tar.gz && ./swiftly init -y --skip-install
 
-    . "/root/.local/share/swiftly/env.sh"
+    if [[ "$(uname -s)" == "Linux" ]]; then
+        curl -O https://download.swift.org/swiftly/linux/swiftly-${SWIFTLY_BOOTSTRAP_VERSION}-$(uname -m).tar.gz && tar zxf swiftly-*.tar.gz && ./swiftly init -y --skip-install
+        . "/root/.local/share/swiftly/env.sh"
+    else
+        export SWIFTLY_HOME_DIR="$(pwd)/swiftly-bootstrap"
+        export SWIFTLY_BIN_DIR="$SWIFTLY_HOME_DIR/bin"
+        export SWIFTLY_TOOLCHAINS_DIR="$SWIFTLY_HOME_DIR/toolchains"
+
+        curl -O https://download.swift.org/swiftly/darwin/swiftly-${SWIFTLY_BOOTSTRAP_VERSION}.pkg && pkgutil --check-signature swiftly-*.pkg && pkgutil --verbose --expand swiftly-*.pkg "${SWIFTLY_HOME_DIR}" && tar -C "${SWIFTLY_HOME_DIR}" -xvf "${SWIFTLY_HOME_DIR}"/swiftly-*/Payload && "$SWIFTLY_HOME_DIR/bin/swiftly" init -y --skip-install
+
+        . "$SWIFTLY_HOME_DIR/env.sh"
+    fi
+
     hash -r
 
     if [ -n "$GITHUB_ENV" ]; then
         echo "Updating GitHub environment"
-        echo "PATH=$PATH" >> "$GITHUB_ENV" && echo "SWIFTLY_HOME_DIR=$SWIFTLY_HOME_DIR" >> "$GITHUB_ENV" && echo "SWIFTLY_BIN_DIR=$SWIFTLY_BIN_DIR" >> "$GITHUB_ENV"
+        echo "PATH=$PATH" >> "$GITHUB_ENV" && echo "SWIFTLY_HOME_DIR=$SWIFTLY_HOME_DIR" >> "$GITHUB_ENV" && echo "SWIFTLY_BIN_DIR=$SWIFTLY_BIN_DIR" >> "$GITHUB_ENV" && echo "SWIFTLY_TOOLCHAINS_DIR=$SWIFTLY_TOOLCHAINS_DIR" >> "$GITHUB_ENV"
     fi
 
     selector=()
@@ -64,7 +77,11 @@ if [ "$installSwiftly" == true ]; then
     echo "Displaying swift version"
     swiftly run "${runSelector[@]}" swift --version
 
-    CC=clang swiftly run "${runSelector[@]}" "$(dirname "$0")/install-libarchive.sh"
+    if [[ "$(uname -s)" == "Linux" ]]; then
+        CC=clang swiftly run "${runSelector[@]}" "$(dirname "$0")/install-libarchive.sh"
+    fi
 else
-    "$(dirname "$0")/install-libarchive.sh"
+    if [[ "$(uname -s)" == "Linux" ]]; then
+        "$(dirname "$0")/install-libarchive.sh"
+    fi
 fi