{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs";
    rust-overlay.url = "github:oxalica/rust-overlay";
    esp-rs.url = "github:leighleighleigh/esp-rs-nix";
  };

  outputs =
    {
      self,
      rust-overlay,
      nixpkgs,
      esp-rs,
    }:
    let
      overlays = [ (import rust-overlay) ];
      pkgs = import nixpkgs {
        system = "x86_64-linux";
        inherit overlays;
      };
    in
    {
      packages.x86_64-linux.elf2uf2-rs = pkgs.callPackage ./elf2uf2.nix { };
      devShell.x86_64-linux = pkgs.mkShell {
        buildInputs = with pkgs; [
          espflash
          esptool
          esp-rs.packages.${system}.default
          cargo-espmonitor
          # (pkgs.rust-bin.selectLatestNightlyWith (
          #   toolchain:
          #   toolchain.default.override {
          #     targets = [
          #       "thumbv6m-none-eabi"
          #       "xtensa-esp32-none-eabi"
          #     ];
          #     extensions = [ "rust-src" ];
          #   }
          # ))
          pkgs.rust-analyzer
          pkgs.flip-link
          pkgs.probe-rs-tools
          self.packages.x86_64-linux.elf2uf2-rs
          pkgs.rustfmt
          # pkgs.picotool
        ];
      };
    };
}