From 56785d30ee910ac5009569d23d494c330f19a93a Mon Sep 17 00:00:00 2001
From: Andy Lee <andylizf@outlook.com>
Date: Wed, 24 Dec 2025 01:44:12 +0000
Subject: [PATCH] Add macos-15-intel for Intel Mac builds (free runner)

Use macos-15-intel (free standard runner) instead of macos-15-large
(paid). This provides Intel Mac wheel support until Aug 2027.

- MACOSX_DEPLOYMENT_TARGET=13.0 for backward compatibility
- Replaces deprecated macos-13 runner
---
 .github/workflows/build-reusable.yml | 30 ++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/build-reusable.yml b/.github/workflows/build-reusable.yml
index c0edb00..d9e6da7 100644
--- a/.github/workflows/build-reusable.yml
+++ b/.github/workflows/build-reusable.yml
@@ -70,8 +70,15 @@ jobs:
             python: '3.12'
           - os: macos-15
             python: '3.13'
-          # Note: Intel Mac (x86_64) builds removed - macos-13 deprecated by GitHub,
-          # macos-15-large requires paid plan. Intel users can build from source.
+          # Intel Mac builds (x86_64) - replaces deprecated macos-13
+          - os: macos-15-intel
+            python: '3.10'
+          - os: macos-15-intel
+            python: '3.11'
+          - os: macos-15-intel
+            python: '3.12'
+          - os: macos-15-intel
+            python: '3.13'
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -191,7 +198,10 @@ jobs:
             export CC=clang
             export CXX=clang++
             # Set deployment target based on runner
-            if [[ "${{ matrix.os }}" == macos-14* ]]; then
+            # macos-15-intel targets 13.0 for backward compatibility with older Intel Macs
+            if [[ "${{ matrix.os }}" == "macos-15-intel" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=13.0
+            elif [[ "${{ matrix.os }}" == macos-14* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=14.0
             elif [[ "${{ matrix.os }}" == macos-15* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=15.0
@@ -209,7 +219,10 @@ jobs:
             export CC=clang
             export CXX=clang++
             # Set deployment target based on runner
-            if [[ "${{ matrix.os }}" == macos-14* ]]; then
+            # macos-15-intel targets 13.3 for backward compatibility (DiskANN needs 13.3+)
+            if [[ "${{ matrix.os }}" == "macos-15-intel" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=13.3
+            elif [[ "${{ matrix.os }}" == macos-14* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=14.0
             elif [[ "${{ matrix.os }}" == macos-15* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=15.0
@@ -250,7 +263,10 @@ jobs:
         if: runner.os == 'macOS'
         run: |
           # Determine deployment target based on runner OS
-          if [[ "${{ matrix.os }}" == macos-14* ]]; then
+          if [[ "${{ matrix.os }}" == "macos-15-intel" ]]; then
+            HNSW_TARGET="13.0"
+            DISKANN_TARGET="13.3"
+          elif [[ "${{ matrix.os }}" == macos-14* ]]; then
             HNSW_TARGET="14.0"
             DISKANN_TARGET="14.0"
           elif [[ "${{ matrix.os }}" == macos-15* ]]; then
@@ -311,7 +327,9 @@ jobs:
           PY_TAG=$($UV_PY -c "import sys; print(f'cp{sys.version_info[0]}{sys.version_info[1]}')")
 
           if [[ "$RUNNER_OS" == "macOS" ]]; then
-            if [[ "${{ matrix.os }}" == macos-14* ]]; then
+            if [[ "${{ matrix.os }}" == "macos-15-intel" ]]; then
+              export MACOSX_DEPLOYMENT_TARGET=13.3
+            elif [[ "${{ matrix.os }}" == macos-14* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=14.0
             elif [[ "${{ matrix.os }}" == macos-15* ]]; then
               export MACOSX_DEPLOYMENT_TARGET=15.0