Boot entry management

[iFreilicht]

@sirphobos

but I have never in my life used nix-env command before, my whole system and home-manager are built from one system flake.

Good on you, that’s really the best way to manage your config on NixOS.

@sirphobos

I wonder where nixos-rebuild gets the text for boot entries… and i wonder if that place is mutable. Or maybe it’s part of the config, and changing it would change nix store hash, and everything will break
update: i did find the boot.json in the configuration in the store. but changing store contents by hand seems the wrong thing to do

Yeah and potentially won’t even work. boot.json is an immediate representation so that different bootloader generators can install their respective bootloader. So for example, for systemd-boot, the config is generated on the fly in a nix expression via a python script using boot.json.

I didn’t see any options to really modify the behavior of this apart from the aforementioned option.

But, what you could do is use the option system.userActivationScripts to add an additional script that does the changes to the boot entries with sed on every rebuild.