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

  outputs =
    {
      self,
      nixpkgs,
      utils,
    }:
    utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs { inherit system; };
      in
      {
        devShells.default =
          with pkgs;
          (mkShell.override { stdenv = llvmPackages.stdenv; }) {
            packages = [
              rustPackages.cargo
              rustPackages.rustc
              rustPackages.rustfmt
              rustPackages.clippy

              protobuf
            ];
            LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";

            RUST_SRC_PATH = "${rustPackages.rustPlatform.rustLibSrc}";
            RUST_LOG = "debug,vapore=trace,vapore-client=trace,bindgen=error";
            RUST_BACKTRACE = "1";
          };

        formatter = pkgs.nixfmt-rfc-style;
      }
    );
}