{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    rust-overlay = {
      inputs.nixpkgs.follows = "nixpkgs";
      url = "github:oxalica/rust-overlay";
    };
  };
  outputs = {
    nixpkgs,
    rust-overlay,
    ...
  }: let
    pkgs = import nixpkgs {
      system = "x86_64-linux";
      overlays = [(import rust-overlay)];
    };
    rust-bin = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
  in {
    devShells.x86_64-linux.default = pkgs.mkShell {
      buildInputs = [
        pkgs.espflash
        pkgs.esp-generate
        pkgs.rust-analyzer
        rust-bin
      ];
      shellHook = ''
        export RUSTUP_TOOLCHAIN=${rust-bin}
      '';
    };
  };
}