Build distribution package on macOS instead of Linux

Author: ldionne

.github/workflows/build-and-publish-package.yml

@@ -6,7 +6,10 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    # This job runs on macOS because we can't upload binary wheels to PyPI for Linux.
+    # Hence, we produce both a binary *and* a source distribution in this job, but the
+    # binary distribution is only valid for macOS.
+    runs-on: macos-latest
     name: Build LNT package
     steps:
     - uses: actions/checkout@v5