{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-23.05";
    flake-utils.url = "github:numtide/flake-utils";
    solo1-cli-src = {
      url = "github:solokeys/solo1-cli";
      flake = false;
    };
  };
  outputs = { self, nixpkgs, flake-utils, solo1-cli-src, ... }:
    flake-utils.lib.eachSystem [
      "x86_64-linux" "i686-linux" "aarch64-linux"
    ] (system:
      let

        pkgs = nixpkgs.legacyPackages.${system};
        #python-pkgs = pkgs.python38Packages;
        python-pkgs = pkgs.python3Packages;
        solo1-cli = python-pkgs.buildPythonApplication {
          name = "solo1-cli";
          format = "flit";

          propagatedBuildInputs = with python-pkgs; [
            click
            cryptography
            ecdsa
            fido2
            intelhex
            pyserial
            pyusb
            requests

            black
            flake8
            #flit_core
            #flit
            ipython
            isort
          ];
          src = solo1-cli-src;

          postPatch = ''
            #substituteInPlace solo/devices/base.py --replace 'CTAP1' 'Ctap1'
            substituteInPlace solo/devices/solo_v1.py --replace 'CTAP1' 'Ctap1'

            substituteInPlace solo/devices/base.py --replace 'CTAP2' 'Ctap2'
            substituteInPlace solo/devices/solo_v1.py --replace 'CTAP2' 'Ctap2'
          '';

          #enableParallelBuilding = true;
        };

      in
      {
        packages.default = solo1-cli;
        packages.solo1-cli = solo1-cli;
      }
    );
}