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

    nixpkgs-mozilla = {
      url = "github:mozilla/nixpkgs-mozilla";
      flake = false;
    };
  };

  outputs = { self, nixpkgs, utils, naersk, nixpkgs-mozilla }:
    utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [
            (import nixpkgs-mozilla)
          ]; 
        };

        toolchain = (pkgs.rustChannelOf {
          rustToolchain = ./rust-toolchain.toml;
          sha256 = "sha256-yMuSb5eQPO/bHv+Bcf/US8LVMbf/G/0MSfiPwBhiPpk=";
        }).rust;
        
        naersk-lib = pkgs.callPackage naersk {
          cargo = toolchain;
          rustc = toolchain;
        };
      in
      {
        defaultPackage = naersk-lib.buildPackage ./.;

        devShell = pkgs.mkShell {
          nativeBuildInputs = [ toolchain ];
        };
      }
    );
}