R and dependencies are not cached correctly

[aromanielloNTIA]

Hi, it looks like in workflow runs on this repo and my own which use this action, the installation of R and required dependencies are not properly cached. It appears the underlying setup-r action is supposed to automatically cache, but on each run, R and all dependencies are re-downloaded. This is a pretty huge overhead for what is otherwise a simple check. Is there any chance that this cache behavior could be improved?

[dieghernan]

Hi,

I am working on a new version that hopefully improves that. Stay tuned

[aromanielloNTIA]

Hi @dieghernan, thanks for the reply! I have not noticed a speedup or meaningful caching since updating to v4. Perhaps an actions/cache step could be added within this action to cache the entire docker image if it hasn't changed? Such a change could probably be included in a v4.x without breaking anything else.

[dieghernan]

Agree , I was thinking also in that however I didn't find the way to use actions/cache with Docker https://github.com/actions/cache

Maybe I missed something or there's another action that can help with that