> It is significantly more bandwidth- / rebuild-heavy. If an input for a derivation changes it will trigger a rebuild, which means either a redownload from the

> It is significantly more bandwidth- / rebuild-heavy. If an input for a derivation changes it will trigger a rebuild, which means either a redownload from the binary cache or a recompilation. For general usage I didn’t notice it much, like, as an alternative to apt/pacman/etc. Ok, maybe don’t use it from a limited data plan (but isn’t true of every desktop OS?). But sure, if you patch some lib n layers deep you will have to recompile many things, which is a godsend (in that you can actually do that), but will take a bit of time. But you can usually decrement its impact by really changing what has to be changed and using a “standard” channel for all the rest. With flakes it is especially easy to mix and match multiple nixpkgs repos at different versions.