{
  description = "a collection of common nix expressions used by rebmit";

  outputs =
    inputs@{ flake-parts, ... }:
    flake-parts.lib.mkFlake { inherit inputs; } (
      { config, lib, ... }:
      let
        selfLib = import ./lib { inherit inputs lib; };
      in
      {
        systems = [
          "x86_64-linux"
          "aarch64-linux"
        ];
        flake.lib = selfLib // {
          inherit (config) systems;
        };
        imports = [
          inputs.devshell.flakeModule
          inputs.git-hooks-nix.flakeModule
          inputs.treefmt-nix.flakeModule
        ] ++ selfLib.path.buildModuleList ./flake;
      }
    );

  inputs = {
    # flake-parts

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

    # nixpkgs

    nixpkgs.follows = "nixpkgs-unstable";
    nixpkgs-unstable.url = "github:rebmit/nixpkgs/nixos-unstable";

    # flake modules

    devshell = {
      url = "github:numtide/devshell";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    git-hooks-nix = {
      url = "github:cachix/git-hooks.nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-compat.follows = "flake-compat";
      inputs.gitignore.follows = "gitignore-nix";
    };
    treefmt-nix = {
      url = "github:numtide/treefmt-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # libraries

    gitignore-nix = {
      url = "github:hercules-ci/gitignore.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    haumea = {
      url = "github:nix-community/haumea";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # misc

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