iiogama's Personal NixOS/Home-Manager Configuration

How to build existing system with flake

cd <build repo>
sudo nixos-rebuild switch --flake ".#<hostname>"

How to update existing system's packages

sudo nixos-rebuild switch --flake ".#<hostname>" --update-input nixpkgs --commit-lock-file

How to install new system with flake

Method 1

1. Boot into live NixOS disk and run the following commands:

sudo su
nix-env -iA nixos.git
git clone <repo url> /mnt/etc/nixos
nixos-install --flake ".#<host>"

2. Reboot machine, log in, and run the following commands:

sudo rm -r /etc/nixos/configuration.nix

3. Move build to desired location.

Method 2

1. Boot into live NixOS disk
2. Install NixOS
3. Add the following changes:

environment.systemPackages = with pkgs; [
  git
];
services.openssh.enable = true;
nix.settings.experimental-features = [ "nix-command" "flakes" ];

4. Run the following command:

sudo nixos-rebuild switch

5. Grab the IP address with the following command:

ip addr

6. Copy a flake repo from the host machine:

rsync -avz <repo directory> <user>@<ip addr>:

Nix commands to remember

nix flake update
nix run nixpkgs#<package>

Resources