Tutorial: github:gjz010/nix-channel#nixos-with-flake-init

github:gjz010/nix-channel#nixos-with-flake-init upgrades nixos-generate-config by generating a Flake rather than just configuration.nix.

What is provided by default?

• NixOS installation as Flake output nixosConfigurations.
• home-manager NixOS-Module support.
• Several quality of life tweaks around Nix experience:
  • Enabling Flake commands by default.
  • Filling in system.configurationRevision, enabling nixos-version --configuration-revision.
  • Unifying nixpkgs versions by Nix channel, by Flake registry, and the one used by current installation.

How to install NixOS using nixos-with-flake-init?

TL;DR: Follow the official tutorial but replace the nixos-generate-config line with:

# You may save your configurations elsewhere as long as they are presisted.
mkdir -p /mnt/etc/nixos
cd /mnt/etc/nixos
# Invoke nixos-with-flake-init here.
nix --experimental-features "nix-command flakes" run github:gjz010/nix-channel#nixos-with-flake-init

and replace the nixos-install line with:

# nixos-with-flake-init will require you to enter your hostname, say [YOUR_HOST_NAME].
nixos-install --flake .#[YOUR_HOST_NAME]

Additional notes

Source: https://github.com/gjz010/nix-channel/tree/main/pkgs/nixos-with-flake-init