{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-utils = {
      url = "github:numtide/flake-utils";
    };
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs = {
        nixpkgs.follows = "nixpkgs";
      };
    };
  };
  outputs = {
    flake-utils,
    nixpkgs,
    rust-overlay,
    ...
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = import nixpkgs {
        inherit system;
        overlays = [(import rust-overlay)];
      };
      rustToolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
      rustPlatform = pkgs.makeRustPlatform {
        cargo = rustToolchain;
        rustc = rustToolchain;
      };
    in {
      devShells.default = pkgs.mkShell {
        packages = with pkgs; [
          rust-analyzer
          rustToolchain
        ];
      };
    });
}