{
  description = "mkv";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs =
    { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };
        darwinBuildInputs = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isDarwin [
          pkgs.libiconv
        ];
      in
      {
        devShells.default = pkgs.mkShell {
          packages = [
            pkgs.rustc
            pkgs.cargo
            pkgs.rustfmt
            pkgs.rust-analyzer
          ];
        };
        packages.default = pkgs.rustPlatform.buildRustPackage {
          pname = "mkv";
          version = "0.1.0";
          cargoLock.lockFile = ./Cargo.lock;
          src = pkgs.lib.cleanSource ./.;
          buildInputs = darwinBuildInputs;
          doCheck = false;
        };
      }
    );
}