{
  description = "getchoo's flake for system configurations";

  nixConfig = {
    extra-substituters = [
      "https://getchoo.cachix.org"
      "https://nix-community.cachix.org"
    ];
    extra-trusted-public-keys = [
      "getchoo.cachix.org-1:ftdbAUJVNaFonM0obRGgR5+nUmdLMM+AOvDOSx0z5tE="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-unstable";
    nixpkgs-stable.url = "nixpkgs/nixos-23.05";
    darwin = {
      url = "github:LnL7/nix-darwin/";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # this is just to avoid having multiple versions in flake.lock
    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.darwin.follows = "darwin";
      inputs.home-manager.follows = "hm";
    };

    deploy = {
      url = "github:serokell/deploy-rs";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.utils.follows = "flake-utils";
      inputs.flake-compat.follows = "flake-compat";
    };

    # ditto
    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };

    # ditto
    flake-utils.url = "github:numtide/flake-utils";

    parts = {
      url = "github:hercules-ci/flake-parts";
      inputs.nixpkgs-lib.follows = "nixpkgs";
    };

    getchoo = {
      url = "github:getchoo/nix-exprs";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-compat.follows = "flake-compat";
      inputs.effects.follows = "effects";
      inputs.parts.follows = "parts";
      inputs.hercules-ci-agent.follows = "hercules-ci-agent";
    };

    guzzle_api = {
      url = "github:getchoo/guzzle_api";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.pre-commit-hooks.follows = "pre-commit";
    };

    # ditto
    hercules-ci-agent = {
      url = "github:hercules-ci/hercules-ci-agent";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-parts.follows = "parts";
    };

    effects = {
      url = "github:hercules-ci/hercules-ci-effects";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.hercules-ci-agent.follows = "hercules-ci-agent";
      inputs.flake-parts.follows = "parts";
    };

    hm = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    lanzaboote = {
      url = "github:nix-community/lanzaboote";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-compat.follows = "flake-compat";
      inputs.flake-parts.follows = "parts";
      inputs.flake-utils.follows = "flake-utils";
      inputs.pre-commit-hooks-nix.follows = "pre-commit";
    };

    nix-index-database = {
      url = "github:nix-community/nix-index-database";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nixos-wsl = {
      url = "github:nix-community/NixOS-WSL";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-compat.follows = "flake-compat";
      inputs.flake-utils.follows = "flake-utils";
    };

    nixos-hardware.url = "github:NixOS/nixos-hardware";
    nur.url = "github:nix-community/NUR";

    openwrt-imagebuilder = {
      url = "github:astro/nix-openwrt-imagebuilder";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    pre-commit = {
      url = "github:cachix/pre-commit-hooks.nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.nixpkgs-stable.follows = "nixpkgs";
      inputs.flake-compat.follows = "flake-compat";
      inputs.flake-utils.follows = "flake-utils";
    };

    ragenix = {
      url = "github:yaxitech/ragenix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.agenix.follows = "agenix";
      inputs.flake-utils.follows = "flake-utils";
    };
  };

  outputs = {
    getchoo,
    parts,
    pre-commit,
    ...
  } @ inputs:
    parts.lib.mkFlake {inherit inputs;} {
      imports = [
        pre-commit.flakeModule
        getchoo.flakeModules.homeConfigurations

        ./hosts
        ./parts
        ./users
      ];
    };
}