ci: provide separate macos releases for intel and arm

This will immensely reduce the complexity required to support both
architectures, reduce overall lines of code and unblock follow-up
simplifications.

3 files changed, 60 insertions, 31 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bf8356243e..c30748bb78 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,17 +20,6 @@ env:
   INSTALL_PREFIX: ${{ github.workspace }}/nvim-install
 
 jobs:
-  macos-universal:
-    runs-on: macos-14
-    timeout-minutes: 20
-    steps:
-      - uses: actions/checkout@v4
-      - uses: ./.github/actions/setup
-      - run: printf 'CMAKE_BUILD_TYPE=Release\n' >> $GITHUB_ENV
-
-      - name: Build universal binary
-        run: ./.github/scripts/build_universal_macos.sh
-
   old-cmake:
     name: Test oldest supported cmake
     runs-on: ubuntu-22.04
diff --git a/.github/workflows/notes.md b/.github/workflows/notes.md
index 294d92ebb5..ba7e55a9c1 100644
--- a/.github/workflows/notes.md
+++ b/.github/workflows/notes.md
@@ -18,12 +18,19 @@ ${NVIM_VERSION}
 2. Run the MSI
 3. Run `nvim.exe` on your CLI of choice
 
-### macOS
+### macOS (x86_64)
 
-1. Download **nvim-macos.tar.gz**
-2. Run `xattr -c ./nvim-macos.tar.gz` (to avoid "unknown developer" warning)
-3. Extract: `tar xzvf nvim-macos.tar.gz`
-4. Run `./nvim-macos/bin/nvim`
+1. Download **nvim-macos-x86_86.tar.gz**
+2. Run `xattr -c ./nvim-macos-x86_86.tar.gz` (to avoid "unknown developer" warning)
+3. Extract: `tar xzvf nvim-macos-x86_86.tar.gz`
+4. Run `./nvim-macos-x86_86/bin/nvim`
+
+### macOS (arm64)
+
+1. Download **nvim-macos-arm64.tar.gz**
+2. Run `xattr -c ./nvim-macos-arm64.tar.gz` (to avoid "unknown developer" warning)
+3. Extract: `tar xzvf nvim-macos-arm64.tar.gz`
+4. Run `./nvim-macos-arm64/bin/nvim`
 
 ### Linux (x64)
 
@@ -56,7 +63,8 @@ https://github.com/neovim/neovim-releases.
 ${SHA_LINUX_64_TAR}
 ${SHA_APP_IMAGE}
 ${SHA_APP_IMAGE_ZSYNC}
-${SHA_MACOS}
+${SHA_MACOS_X86_64}
+${SHA_MACOS_ARM64}
 ${SHA_WIN_64_ZIP}
 ${SHA_WIN_64_MSI}
 ```
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 48a3901955..e0989120f3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -59,8 +59,19 @@ jobs:
           ./build/bin/nvim --version | head -n 3 >> $GITHUB_OUTPUT
           printf 'END\n' >> $GITHUB_OUTPUT
 
-  macOS:
-    runs-on: macos-14
+  macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        runner: [ macos-12, macos-14 ]
+        include:
+          - runner: macos-12
+            arch: x86_64
+          - runner: macos-14
+            arch: arm64
+    runs-on: ${{ matrix.runner }}
+    env:
+      MACOSX_DEPLOYMENT_TARGET: 11.0
     steps:
       - uses: actions/checkout@v4
         with:
@@ -72,17 +83,33 @@ jobs:
         run: printf 'CMAKE_BUILD_TYPE=Release\n' >> $GITHUB_ENV
       - if: github.event_name == 'schedule' || (github.event_name == 'workflow_dispatch' && github.event.inputs.tag_name == 'nightly')
         run: printf 'CMAKE_BUILD_TYPE=RelWithDebInfo\n' >> $GITHUB_ENV
-      - name: Build universal binary
-        run: ./.github/scripts/build_universal_macos.sh
+
+      - name: Build deps
+        run: |
+          cmake -S cmake.deps -B .deps -G Ninja \
+            -D CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} \
+            -D CMAKE_FIND_FRAMEWORK=NEVER
+          cmake --build .deps
+
+      - name: Build neovim
+        run: |
+          cmake -B build -G Ninja \
+            -D CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} \
+            -D ENABLE_LIBINTL=OFF \
+            -D CMAKE_FIND_FRAMEWORK=NEVER
+          cmake --build build
+
+      - name: Package
+        run: cpack --config build/CPackConfig.cmake
+
       - uses: actions/upload-artifact@v4
         with:
-          name: nvim-macos
-          path: build/nvim-macos.tar.gz
+          name: nvim-macos-${{ matrix.arch }}
+          path: build/nvim-macos-${{ matrix.arch }}.tar.gz
           retention-days: 1
 
   windows:
     runs-on: windows-2019
-    name: windows (MSVC_64)
     steps:
       - uses: actions/checkout@v4
         with:
@@ -106,7 +133,7 @@ jobs:
           retention-days: 1
 
   publish:
-    needs: [linux, macOS, windows]
+    needs: [linux, macos, windows]
     runs-on: ubuntu-latest
     env:
       GH_REPO: ${{ github.repository }}
@@ -160,11 +187,16 @@ jobs:
           cd ./appimage
           sha256sum nvim.appimage.zsync > nvim.appimage.zsync.sha256sum
           echo "SHA_APP_IMAGE_ZSYNC=$(cat nvim.appimage.zsync.sha256sum)" >> $GITHUB_ENV
-      - name: Generate macOS SHA256 checksums
+      - name: Generate macos x86_64 SHA256 checksums
+        run: |
+          cd ./nvim-macos-x86_64
+          sha256sum nvim-macos-x86_64.tar.gz > nvim-macos-x86_64.tar.gz.sha256sum
+          echo "SHA_MACOS_X86_64=$(cat nvim-macos-x86_64.tar.gz.sha256sum)" >> $GITHUB_ENV
+      - name: Generate macos arm64 SHA256 checksums
         run: |
-          cd ./nvim-macos
-          sha256sum nvim-macos.tar.gz > nvim-macos.tar.gz.sha256sum
-          echo "SHA_MACOS=$(cat nvim-macos.tar.gz.sha256sum)" >> $GITHUB_ENV
+          cd ./nvim-macos-arm64
+          sha256sum nvim-macos-arm64.tar.gz > nvim-macos-arm64.tar.gz.sha256sum
+          echo "SHA_MACOS_ARM64=$(cat nvim-macos-arm64.tar.gz.sha256sum)" >> $GITHUB_ENV
       - name: Generate Win64 SHA256 checksums
         run: |
           cd ./nvim-win64
@@ -179,6 +211,6 @@ jobs:
         run: |
           envsubst < "$GITHUB_WORKSPACE/.github/workflows/notes.md" > "$RUNNER_TEMP/notes.md"
           if [ "$TAG_NAME" != "nightly" ]; then
-            gh release create stable $PRERELEASE --notes-file "$RUNNER_TEMP/notes.md" --title "$SUBJECT" --target $GITHUB_SHA nvim-macos/* nvim-linux64/* appimage/* nvim-win64/*
+            gh release create stable $PRERELEASE --notes-file "$RUNNER_TEMP/notes.md" --title "$SUBJECT" --target $GITHUB_SHA nvim-macos-x86_64/* nvim-macos-arm64/* nvim-linux64/* appimage/* nvim-win64/*
           fi
-          gh release create $TAG_NAME $PRERELEASE --notes-file "$RUNNER_TEMP/notes.md" --title "$SUBJECT" --target $GITHUB_SHA nvim-macos/* nvim-linux64/* appimage/* nvim-win64/*
+          gh release create $TAG_NAME $PRERELEASE --notes-file "$RUNNER_TEMP/notes.md" --title "$SUBJECT" --target $GITHUB_SHA nvim-macos-x86_64/* nvim-macos-arm64/* nvim-linux64/* appimage/* nvim-win64/*