Clean task outputs when task implementation changes

[wolfs]

We currently clean the outputs of a task when

• the version of Gradle changed,
• the outputs are safe to delete,
• and the outputs have not been generated by Gradle (e.g. when the Gradle version changes).

I wonder if that should happen later in the stage and we would clean out the outputs as well when the task implementation or even any of the inputs changed.

Especially for task implementation changes the outputs should be cleaned, so there are no strange side effects.

---

cc: @gradle/execution

[stale]

This issue has been automatically marked as stale because it has not had recent activity. Given the limited bandwidth of the team, it will be automatically closed if no further activity occurs. If you're interested in how we try to keep the backlog in a healthy state, please read our blog post on how we refine our backlog. If you feel this is something you could contribute, please have a look at our Contributor Guide. Thank you for your contribution.