{
  description = "blueprint-universe";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-24.11";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
    blueprint.url = "github:numtide/blueprint";
    blueprint.inputs.nixpkgs.follows = "nixpkgs";
    treefmt-nix.url = "github:numtide/treefmt-nix";
    treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
    nixago.url = "github:jmgilman/nixago";
    nixago.inputs.nixpkgs.follows = "nixpkgs";

    crane.url = "github:ipetkov/crane";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    inputs:
    inputs.blueprint {
      inherit inputs;
      prefix = "nix/";

      # change this if unfree software is required.
      nixpkgs.config.allowUnfree = false;
    };
}