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

    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    naersk = {
      url = "github:nix-community/naersk/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = inputs @ {self, ...}:
    inputs.utils.lib.eachDefaultSystem (system: let
      pkgs = import inputs.nixpkgs {
        inherit system;

        overlays = [
          (import inputs.rust-overlay)
        ];
      };

      toolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;

      naersk = pkgs.callPackage inputs.naersk {
        cargo = toolchain;
        rustc = toolchain;
      };
    in {
      packages.default = naersk.buildPackage {
        src = ./.;
      };
      formatter = pkgs.alejandra;
      checks = {
        inherit (self.packages.${system}) default;
        # TODO: clippy and other checks?
      };
      devShell = with pkgs;
        mkShell {
          buildInputs = [
            hurl
            toolchain
            rustfmt
            rustPackages.clippy
            rust-analyzer
            nodePackages_latest.vscode-langservers-extracted
          ];
          RUST_SRC_PATH = rustPlatform.rustLibSrc;
        };
    });
}