nh os — Reconfigure or debug a NixOS machine. More information: <https://github.com/nix-community/nh#usage>.

Build and switch to a specified NixOS flake configuration

nh os switch {{path/to/flake}}

Update all the flake inputs of the specified NixOS flake configuration, build it and make it the boot default

nh os boot {{path/to/flake}} {{[-u|--update]}}

Build and activate a specified NixOS flake configuration specialisation

nh os test {{path/to/flake}} {{[-s|--specialisation]}} {{specialisation}}

Build a specified NixOS flake configuration host and create a symlink of the result from the Nix store in the current directory

nh os build-vm {{path/to/flake}} {{[-H|--hostname]}} {{host}}

Load a specified NixOS flake configuration in Nix REPL (Nix evaluation environment)

nh os repl {{path/to/flake}}