Merge branches 'maint/v1.0' and 'readme-cache-found' into maint/v1.1

README.md

@@ -32,7 +32,11 @@ with:
   bootstrap_packages: <list>
 ```
 
-The workflow outputs the value of the cygport [`$PV`][PV] variable as `pv`.
+The workflow creates the following outputs:
+
+-   `pv`: the value of the [`$PV`][PV] variable per `cygport vars`.
+-   `cache-found`: whether the build stage was skipped because an up-to-date
+    build cache was available.
 
 ### Prepare release
 
@@ -103,6 +107,4 @@ secrets:
 
 [reusable workflows]: https://docs.github.com/en/actions/using-workflows/reusing-workflows
 [cygport]: https://cygwin.github.io/cygport/
-[cygporter/action]: https://github.com/cygporter/action
-[actions]: https://docs.github.com/en/actions/creating-actions/about-custom-actions
 [PV]: https://cygwin.github.io/cygport/syntax_cygpart.html#PV