How do I make sure that all packages I install on my system nixos installation (i.e. packages listed in /etc/nixos/configuration.nix, which I install using sudo nixos-rebuild switch) are using the latest (unstable) version of nixos/nixpkgs?
How do I upgrade my system to nixos-unstable?
40.3k views Asked by sid-kap At
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Run the following commands:
sudo nix-channel --add https://nixos.org/channels/nixos-unstable
sudo nix-channel --add https://nixos.org/channels/nixpkgs-unstable
Note that the sudo is required: if you don't use sudo, it will only affect user-level packages (i.e. things you install using nix-env -i), not system-level packages.
As explained in the manual's section on upgrading, if you issue the following command as root:
you will most likely see something like the following (if you were following the 16.09 branch for instance):
By issuing the following command (still as root):
you will remove the 16.09 channel and replace it with nixos-unstable.
Now this is not enough yet. To really update your system, you need one last command:
which is going to rebuild your system with your current configuration and updated packages from the channel you switched to.