--user?

Author: mscroggs

.github/workflows/release.yml

@@ -3,6 +3,7 @@ name: Push to PyPI
 on:
   push:
     tags: ["v*"]
+    branches: ["main"]
 
 jobs:
   python-library:
@@ -17,7 +18,7 @@ jobs:
         with:
           python-version: "3.12"
       - name: Build
-        run: python3 -m build
+        run: python3 -m pip install build --user
 
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1