{
  description = "popup.kak";
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils, }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        kak-popup = pkgs.callPackage ./default.nix { };
      in {
        packages = {
          default = kak-popup;
          kak-popup = kak-popup;
        };

        devShells.default =
          pkgs.mkShell { packages = with pkgs; [ cargo clippy rustc tmux ]; };
      }) // {
        overlays.default = import ./overlay.nix;
      };
}