{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11";

  outputs = { self, nixpkgs, ... }:
    let
      supportedSystems = nixpkgs.lib.systems.flakeExposed;
      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
      nixpkgsFor = forAllSystems (system: import nixpkgs {
        inherit system;
        overlays = [ self.overlays.default ];
      });
    in

    {
      overlays.default = final: prev: {
        mkups = final.callPackage ./mkups.nix { };
      };

      packages = forAllSystems (system:
        let
          pkgs = nixpkgsFor.${system};
        in
        {
          default = pkgs.mkups;
        });

      devShells = forAllSystems (system:
        let
          pkgs = nixpkgsFor.${system};
        in
        {
          default = pkgs.mkShell {
            inputsFrom = [ pkgs.mkups ];
            packages = [ pkgs.clippy ];
          };
        });
    };
}