The thing I actually love about Flakes is the fact that my immutable system configuration now also contains the versions of dependencies, instead of them being

The thing I actually love about Flakes is the fact that my immutable system configuration now also contains the versions of dependencies, instead of them being in some out-of-band special area. This is super nice for rollbacks and just general visibility. It's even more of a plus that it is aware of Git and makes rather surprisingly intelligent decisions when automatically upgrading the system on a schedule (as one example, it seems to be able to deal with when the Git repository has staged or unstaged changes just fine, producing commits with just the lockfile changes.)