Composefs for /nix/store?

LWN writes about a new file system composefs that is for read-only integrity checked system paths, intended for use in something called podman and OSTree, none of which I know anything about:

Naively, read-only, deduped and integrity checked sound like good features for /nix/stores. But is it so? Or would not it not improve over conventional file systems?


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I guess I am not reading that.

From GitHub - containers/composefs: a file system for mounting container images it is not clear to me if we would be able to modify the fs after creation and without unmounting and remounting.

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Oh, I must have pasted the wrong link; I did generate a “free to share link”. Edited the post to fix that. Sorry! Or use @winter’s link.