{
  inputs = {
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixpkgs.url = "nixpkgs/nixos-unstable";
  };
  outputs = { nixpkgs, fenix, ... }:
    let
      systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      foreachSystem = nixpkgs.lib.genAttrs systems;
    in
    rec {
      packages = foreachSystem (system:
        let
          pkgs = import nixpkgs { inherit system; };
          rustPlatform = pkgs.makeRustPlatform {
            cargo = fenix.packages."${pkgs.stdenv.system}".complete.toolchain;
            rustc = fenix.packages."${pkgs.stdenv.system}".complete.toolchain;
          };
          buildTools = with pkgs; [ pkg-config ];
          libraries = with pkgs; [ sqlite ] ++ (nixpkgs.lib.optional pkgs.stdenv.isDarwin darwin.apple_sdk.frameworks.Security);
        in
        rec {
          hello = rustPlatform.buildRustPackage rec {
            pname = "hello";
            version = "1.0.0";

            nativeBuildInputs = buildTools;
            buildInputs = libraries;

            src = ./.;

            cargoLock = {
              lockFile = ./Cargo.lock;
            };

            meta = with nixpkgs.lib; {
              description = "rust project scaffold";
              homepage = "https://git.jeffthecoder.xyz/public/os-flakes";
              license = licenses.unlicense;
              maintainers = [ ];
            };
          };

          default = hello;
        });
      devShells = foreachSystem
        (system:
          let
            pkgs = import nixpkgs { inherit system; };
            developmentTools = with pkgs; [
              # bpf-linker
              # cargo-espflash
              # cargo-generate
              # cargo-make
              # cargo-mobile2
              # cargo-tauri
              # cargo-watch
              # TODO: cargo-xcode
              # TODO: create-tauri-app
              # cargo-espflash
              # TODO: kopium
              # TODO: ldproxy
              # TODO: paperclip
              sea-orm-cli
              # perseus-cli
              # trunk
              # wasm-bindgen-cli
            ] ++ (with fenix.packages."${system}".complete; [ rust-analyzer rust-src ]);
          in
          with pkgs; rec {
            default = packages."${system}".default.overrideAttrs (prevAttrs: {
              nativeBuildInputs = prevAttrs.nativeBuildInputs ++ developmentTools;

              RUST_SRC_PATH = stdenv.mkDerivation {
                inherit (rustc) src;
                inherit (rustc.src) name;
                phases = ["unpackPhase" "installPhase"];
                installPhase = ''cp -r library $out'';
              };
            });
          });
    };
}