Interesting to me that the author is seeking to add this into the unikernel. I was playing with the PHP Rumprun unikernel before trying to make it immutable such that the unikernel is based on one file structure only (surprise: most PHP applications assume they can write to a FS).<p>I like the idea that my deployment is closer to being idempotent for a number of reasons, one of which is security.