{

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    utils.url = "github:numtide/flake-utils";
    naersk = {
      url = "github:nmattia/naersk/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "utils";
    };
  };

  outputs = { self, nixpkgs, utils, naersk, rust-overlay }:
    utils.lib.eachDefaultSystem (system:
      let
        overlays = [ (import rust-overlay) ];
        pkgs = import nixpkgs { inherit system overlays; };
        naersk-lib = pkgs.callPackage naersk { };
        rustToolchain =
          (pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml);

        buildInputs = [
          rustToolchain
          pkgs.openssl
        ];
        nativeBuildInputs = [
          pkgs.pkg-config
        ];
      in
      rec {
        packages.ha-now-playing = (naersk-lib.override {
          cargo = rustToolchain;
          rustc = rustToolchain;
        }).buildPackage
          {
            inherit buildInputs nativeBuildInputs;
            pname = "ha-now-playing";
            root = ./.;

          };
        defaultPackage = packages.ha-now-playing;

        apps.ha-now-playing = utils.lib.mkApp {
          drv = self.defaultPackage."${system}";
        };
        defaultApp = apps.ha-now-playing;

        overlays = final: prev: {
          ha-now-playing = packages.ha-now-playing;
        };

        devShell = with pkgs; mkShell {
          inherit buildInputs;
          nativeBuildInputs = [ cargo-edit cargo-expand cargo-diet cargo-feature cargo-outdated rust-analyzer pre-commit jq gitflow ] ++ nativeBuildInputs;
        };

      });

}