{
  description = "HashiCorp Vagrant project";

  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils }:
    let
      localOverlay = import ./nix/overlay.nix;
      overlays = [ localOverlay ];
    in flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system overlays;
        };
      in {
        legacyPackages = pkgs;
        inherit (pkgs) devShell;
      }) // {
        # platform independent attrs
        overlay = final: prev: (nixpkgs.lib.composeManyExtensions overlays) final prev;
        inherit overlays;
      };
}