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nixos-rebuild

Reconfigure a NixOS machine. More information: https://nixos.org/nixos/manual/#sec-changing-config.

Build and switch to the new configuration, making it the boot default:

sudo nixos-rebuild switch

Build and switch to the new configuration, making it the boot default and naming the boot entry:

sudo nixos-rebuild switch -p {{name}}

Build and switch to the new configuration, making it the boot default and installing updates:

sudo nixos-rebuild switch --upgrade

Rollback changes to the configuration, switching to the previous generation:

sudo nixos-rebuild switch --rollback

Build the new configuration and make it the boot default without switching to it:

sudo nixos-rebuild boot

Build and activate the new configuration, but don't make a boot entry (for testing purposes):

sudo nixos-rebuild test

Build the configuration and open it in a virtual machine:

sudo nixos-rebuild build-vm