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All you have to do is install Salt, and then you can run salt-call to apply states.

Yes, Salt states can depend on other states, and you could choose to apply only selected states.

By the sounds of it, you could do this currently.

1) Create a root image for your use that installs Salt in your Arch image. See here: https://github.com/pauldotknopf/darch-recipes/blob/master/ba...

2) For the rest of your recipes/layers, create a script/bash file like you would normally, but just pass execution to Salt.

I'll look into Salt more. Maybe there is a way to extend Darch to support different "executors" to support things like bash/Salt/Puppet/etc.