Action not correctly caching dependencies when using triplet-overlay

I’m using run-vcpkg to build a library that I need to link statically to libprotobuf (but with DYNAMIC_CRT), so I need to use an overlay to get the right version.

This however seems to trip the caching. Even after consecutive successful runs the Windows job does a full rebuild of all the packages, while the Linux job (which doesn’t use an overlay) is correctly retrieving them.

On the Post Restore from cache and install vcpkg step I’m seeing this:

Post job cleanup.
Save vcpkg and its artifacts to cache
  Cache hit occurred on the cache key 'localGitId=-574880384-args=42-os=1553167195-appendedKey=411780070-triplet=1258145250', saving cache is skipped.

Running VCPKG locally correctly detects the package, that’s why I assume is something in the Action.

Thanks in advance for any pointers.

[sysnet-ai]

@lukka - Thanks so much for the response

Nice catch with the clients/cpp path - however that is something we do need in the ‘real’ repo (It was there due to eager copy pasting).

On the repro repository: https://github.com/sysnet-ai/vcpkg_caching_test seems like the last update helped (Moving to v7 and removing the extra path).

I bumped to v7 and it seems like our main job is now running with correct caching.

Thanks again, closing this out.

[lukka]

@sysnet-ai also, please use the latest version, i.e., lukka/run-vcpkg@v7, and let me know as always, thanks!