{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
  };

  outputs = { self, nixpkgs }:
    let pkgs = nixpkgs.legacyPackages.x86_64-linux;
    inherit (pkgs) lib;
    system = "x86_64-linux";
    in rec {
      formatter."${system}" = pkgs.nixfmt-rfc-style;
      devShells."${system}".default = pkgs.mkShell {
        packages = [
          pkgs.mkvtoolnix-cli
        ];
      };

      overlays.default = final: prev: {
        subtitle-merge = final.rustPlatform.buildRustPackage {
          name = "subtitle-merge";
          version = "1.0";
          src = ./.;
          cargoLock.lockFile = ./Cargo.lock;
          buildInputs = [ final.mkvtoolnix-cli ];
        };
      };

      packages."${system}" = rec {
        subtitle-merge = (overlays.default pkgs pkgs).subtitle-merge;
        default = subtitle-merge;
      };
    };
}