WIP: test on Linux aarch64

- needs stable openslide-bin linux-aarch64 binaries

Author: bgilbert

.github/workflows/python.yml

@@ -42,7 +42,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, ubuntu-24.04-aarch64, macos-latest]
         python-version: [3.8, 3.9, "3.10", "3.11", "3.12", "3.13-dev"]
         openslide: [system, wheel]
         include:
@@ -96,14 +96,21 @@ jobs:
           echo OS_ARCH_TAG=linux-x86_64 >> $GITHUB_ENV
           sudo apt-get install libopenslide0
           ;;
+        ubuntu-24.04-aarch64)
+          echo OS_ARCH_TAG=linux-aarch64 >> $GITHUB_ENV
+          sudo apt-get install libopenslide0
+          ;;
         macos-latest)
           echo OS_ARCH_TAG=macos-arm64-x86_64 >> $GITHUB_ENV
           echo DYLD_LIBRARY_PATH=/opt/homebrew/lib >> $GITHUB_ENV
           brew install openslide
           ;;
         esac
+    - name: Install OpenSlide (temp wheel)
+      if: matrix.openslide == 'wheel' && matrix.os == 'ubuntu-24.04-aarch64'
+      run: pip install 'https://fedorapeople.org/~bgilbert/openslide_bin-4.0.0.4+20240909.bin.pr.285.349.1.a6f0a9c.git-py3-none-manylinux_2_28_aarch64.whl'
     - name: Install OpenSlide (wheel)
-      if: matrix.openslide == 'wheel'
+      if: matrix.openslide == 'wheel' && matrix.os != 'ubuntu-24.04-aarch64'
       run: pip install openslide-bin
     - name: Build dist
       run: |