let
  pkgs = import (fetchTarball { url = "https://github.com/NixOS/nixpkgs/archive/20.03.tar.gz"; sha256 = "0182ys095dfx02vl2a20j1hz92dx3mfgz2a6fhn31bqlp1wa8hlq"; }) {};
  pyPackages = (python-packages: with python-packages; ([
    solo-python pytest
  ] ++ (with builtins; map (d: getAttr d python-packages) (filter (d: stringLength d > 0) (pkgs.lib.splitString "\n" (builtins.readFile ./tools/requirements.txt))))));
  python-with-my-packages = pkgs.python3.withPackages pyPackages;
  src = ./.;
in
with pkgs; stdenv.mkDerivation {
	name = "solo";
	outputs = [ "out" ];
	src = with lib; builtins.filterSource (path: type: !(hasSuffix path "hex" || hasSuffix path "sha256" || baseNameOf path == "result")) src;
	buildInputs = [ gnumake gcc gcc-arm-embedded-8 git python-with-my-packages ];
	phases = [ "unpackPhase" "configurePhase" "buildPhase" "installPhase" ];
	installPhase = ''
        	mkdir -p $out/firmware $out
        	cd targets/stm32l432
        	make cbor
		make build-hacker
        	cp *.hex *.sha256 *.elf cubeconfig_stm32l442.ioc $out/firmware/ 
        '';
	keepDebugInfo = true;
}