{
  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }: flake-utils.lib.eachDefaultSystem (system:
    let
      pkgs = import nixpkgs { inherit system; };
    in
    {
      formatter = pkgs.nixpkgs-fmt;

      packages = rec {
        default = posixlycorrect;
        posixlycorrect = pkgs.callPackage ./. { };
      };
    });
}