Easy Flakes: transition to flakes with unstable channel and home-manager.

README.md

Upgrade

nix flake update  # minor
sudo nixos-rebuild switch --flake '.?submodules=1'

sudo nix-channel --add https://channels.nixos.org/nixos-25.05 nixos  # major (for nix-shell)

Clean

sudo nix-collect-garbage --delete-older-than 30d
nix-collect-garbage --delete-older-than 30d

Home Manager

{ config, pkgs, home-manager, ... }: {
  imports = [ home-manager.nixosModules.default ];
  # ...
}

Unstable

{ pkgs, ... }:
{
  users.users.himura.packages = with pkgs; [
    unstable.winbox4
    # ...
  ];
}

flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
    home-manager.url = "github:nix-community/home-manager/release-24.11";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
  };
  
  outputs = { self, nixpkgs, nixpkgs-unstable, ... }@attrs:
    let
      system = "x86_64-linux";
      overlay-unstable = final: prev: {
        unstable = import nixpkgs-unstable {
          inherit system;
          config.allowUnfree = true;
        };
      };
    in {
      nixosConfigurations.himura-acer = nixpkgs.lib.nixosSystem {
        inherit system;
        specialArgs = attrs;
        modules = [
          ({ config, pkgs, ... }: { nixpkgs.overlays = [ overlay-unstable ]; })
          ./configuration.nix
        ];
      };
    };
}