Improve aarch64 and mac builds (#380)

.github/workflows/build_wheels.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: pypa/cibuildwheel@v2.21.2
+      - uses: pypa/cibuildwheel@v2.22.0
         env:
           CIBW_BUILD: "cp${{ matrix.python-version}}-*"
 
@@ -38,19 +38,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-24.04-arm]
         python-version: [39, 310, 311, 312, 313]
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup up QEMU
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: arm64
-
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.21.2
+        uses: pypa/cibuildwheel@v2.22.0
         env:
           CIBW_BUILD: "cp${{ matrix.python-version}}-*"
           CIBW_ARCHS: aarch64

pyproject.toml

@@ -25,6 +25,7 @@ build-verbosity = 1
 linux.before-all = "curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y"
 linux.environment = { PATH = "$PATH:$HOME/.cargo/bin" }
 macos.before-all = "rustup target add aarch64-apple-darwin x86_64-apple-darwin"
+macos.environment = { MACOSX_DEPLOYMENT_TARGET = "10.12" }
 
 skip = [
   "*-manylinux_i686",
@@ -39,8 +40,3 @@ test-skip = "*-macosx_arm64"
 
 before-test = "pip install pytest hypothesis"
 test-command = "pytest {project}/tests --import-mode=append"
-
-[[tool.cibuildwheel.overrides]]
-select = "*linux_aarch64"
-test-command = """python -c 'import tiktoken; enc = tiktoken.get_encoding("gpt2"); assert enc.encode("hello world") == [31373, 995]'"""
-