Daz DeBoer d068148857
Choose best Gradle version to use for cache cleanup (#526)
The cache-cleanup operation works by executing Gradle on a dummy project
and a custom init-script. The init-script requires at least Gradle 8.11
to work.

Ideally, the version of Gradle used for cleanup should be no older than
the newest one that wrote entries to Gradle User Home. If an older
Gradle version is used for cache-cleanup, it will not remove entries
written specifically for newer versions.

With this change, we now attempt to ensure that cache-cleanup is run
with the best Gradle version available. We inspect the Gradle version on
PATH to see if it is new enough, otherwise we will provision a Gradle
version equal to the newest one that ran in the Job.

The logic is:
- Determine the newest version of Gradle that was executed during the
Job. This is the 'minimum version' for cache cleanup.
- Inspect the Gradle version on PATH (if any) to see if it is equal to
or newer than the 'minimum version'.
- If the version Gradle on PATH is new enough, use that version for
cache-cleanup.
- If not, attempt to provision Gradle with the 'minimum version'.

Fixes #436
2025-01-24 06:16:52 -07:00
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