Another way will be to invalidate the cache by manually updating cleanup-cache.txt in the end. But this requires a commit that has to be reverted later to enable caching and I don't think it's worthy to pollute git history for this.

https://help.appveyor.com/discussions/questions/1310-delete-cache#comment_36916917


> You can have any file as dependency that will be triggering cache invalidation, even "cleanup-cache.txt" say in the root of your repo:
> cache:
>     - my_cached_folder -> cleanup-cache.txt
> Whenever CRC32 of cleanup-cache.txt is changed the cache is invalidated, i.e. not restored in the beginning of the build.

@paul.moore It's here : https://github.com/python/cpython/blob/master/.github/appveyor.yml


Thanks