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You can add something like this to your config: https://stackoverflow.com/questions/48831392/how-to-add-nixos-unstable-channel-declaratively-in-configuration-nix
You just need to have it fetch the tarball for nixos 23.11 instead of nixos unstable.
I'm not sure (I'm about to install it for the first time - on this computer) - According to this all you need to do is:
# nix-channel --add https://channels.nixos.org/nixos-23.11 nixos # nixos-rebuild switch --upgradeWhat if I just want to upgrade some packages? Like not change channel, but Firefox needs an update? I'm not op and don't use flakes btw
You can add something like this to your config: https://stackoverflow.com/questions/48831392/how-to-add-nixos-unstable-channel-declaratively-in-configuration-nix
You just need to have it fetch the tarball for nixos 23.11 instead of nixos unstable.