conditionally cache generates keys

[hanoii]

Description

I would love if taskfile can not only conditionally perform a task, but by telling it what it generates that it would be able to cache everything that was generated by a chechsum so it can copied over rather than re-execute.

I understand though that first #2181 needs to be addressed.

[trulede]

For that you should consider a cache solution. Most compiler toolchains will already support some form of caching, or you can easily create one yourself - a dep task that looks in the checksum file and, if available, downloads files from a cache (based on the checksums).

As cache strategies are going to be very domain specific I can't imagine a generic solution in Task making too much sense (please prove me wrong ....). Better just write a dep task to do whatever you need.

Take a look at the checksum files and decide if there is enough info available to implement your own cache.