{
  description = "artemist's NixOS packages and shells for development";
  
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, utils }: utils.lib.eachDefaultSystem (system:
    let
      pkgs = import nixpkgs { inherit system; };
    in
    {
      packages = {
        zephyr = pkgs.callPackage ./packages/zephyr { };
      };

      formatter = pkgs.nixfmt;
    });
  }