Fix intel macos

.github/workflows/wheels.yml

@@ -48,7 +48,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.x'
-      - run: pip install cibuildwheel==2.18.1  # sync version with pypa/cibuildwheel below
+      - run: pip install cibuildwheel==2.17.0  # sync version with pypa/cibuildwheel below
       - id: set-matrix
         env:
           # only mention one (trivial) python version, as py2.py3 wheels only need to be build once per arch
@@ -86,7 +86,7 @@ jobs:
       if: runner.os == 'Linux'
       uses: docker/setup-qemu-action@v3
 
-    - uses: pypa/cibuildwheel@v2.18.1  # sync version with pip install cibuildwheel above
+    - uses: pypa/cibuildwheel@v2.17.0  # sync version with pip install cibuildwheel above
       timeout-minutes: 10
       with:
         only: ${{ matrix.only }}

add_libmagic.sh

@@ -6,6 +6,13 @@ install_source() {
     # install from source
     # https://www.darwinsys.com/file/
     # https://github.com/file/file/blob/FILE5_45/INSTALL#L51
+    if [ -n "$(which brew)" ] && [ "$(uname -m)" == "x86_64" ]; then
+        # libzstd and liblzma need to be rebuilt from source on intel macos
+        # so they respect MACOSX_DEPLOYMENT_TARGET=10.9 when they get copied into the wheel
+        brew upgrade cmake &&
+        brew pin cmake &&
+        brew reinstall --build-from-source zstd xz
+    fi
     (
         version="file-5.45" &&
         tmpfile="$(mktemp)" &&