{
  description = "PentaTrack DevEnv";

  inputs.utils.url = "github:numtide/flake-utils";
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

  outputs = { self, nixpkgs, utils, ... }:
    utils.lib.eachSystem [ "i686-linux" "x86_64-linux" ]
      (system:
        let
          libstm32cubef1 = with pkgs; stdenv.mkDerivation {
            name = "stm32CubeF1";

            src = fetchFromGitHub {
              owner = "STMicroelectronics";
              repo = "STM32CubeF1";
              rev = "c750eab6990cac35ab05020793b0221ecc1a8ce5";
              sha256 = "sha256-ICGgQCkY5E5Lcd7+U+hX5+MJcTF7J51NFDx6iy/SfgA=";
            };

            installPhase = ''
              mkdir $out
              cp -r ./* $out
            '';
          };

          libstm32stdperiph = with pkgs; stdenv.mkDerivation {
            name = "stm32f10x-stdperiph-lib";

            src = fetchFromGitHub {
              owner = "wajatimur";
              repo = "stm32f10x-stdperiph-lib";
              rev = "master";
              sha256 = "sha256-aLXLe9bT0XbQohfSCWZcRfVvDkUreqKboqUUFkNPkzg=";
            };

            installPhase = ''
              mkdir $out
              cp -r ./* $out
            '';

          };

        pkgs = nixpkgs.legacyPackages.${system};
      in
        {
          devShell = import ./shell.nix {
            inherit pkgs;
            libstm32cube = libstm32cubef1;
            libstm32stdperiph = libstm32stdperiph;
          };
        }
      );
}