cherry_pick does not extract after failure if downloaded file has not changed

[memelet]

If a cherry_pick fails (say due to a bad creates parameter) and is then executed again, ark makes no attempt to extract the file. It seems that it is simply checking that the 'url' file has not changed and not checking that the specified 'creates' exists at 'path'

[memelet]

One thing that makes this pretty painful is that when creating Vagrant boxes using the cachier plugin the 'url' file exists even for a new vm and the ark does not run.

[burtlo]

This is similar to Issue #96 and #100. I want to create a way to recover in these situations.

[javaerb]

I cannot believe this has not been fixed yet. I guess one of us will have to do it.