{
  description = "GKleen's flakey openwrt setup";

  inputs = {
    openwrt = {
      type = "github";
      owner = "openwrt";
      repo = "openwrt";
      ref = "openwrt-21.02";
      flake = false;
    };
    flake-utils = {
      type = "github";
      owner = "numtide";
      repo = "flake-utils";
      ref = "master";
    };
    nixpkgs = {
      type = "github";
      owner = "NixOS";
      repo = "nixpkgs";
      ref = "master";
    };
  };

  outputs = { self, openwrt, nixpkgs, flake-utils, ... }@inputs: flake-utils.lib.eachDefaultSystem (system:
    let
      pkgs = nixpkgs.legacyPackages.${system};
      
      fixWrapper = pkgs.runCommand "fix-wrapper" {} ''
        mkdir -p $out/bin
        for i in ${pkgs.gcc.cc}/bin/*-gnu-gcc*; do
          ln -s ${pkgs.gcc}/bin/gcc $out/bin/$(basename "$i")
        done
        for i in ${pkgs.gcc.cc}/bin/*-gnu-{g++,c++}*; do
          ln -s ${pkgs.gcc}/bin/g++ $out/bin/$(basename "$i")
        done
      '';

      fhs = extraAttrs: pkgs.buildFHSUserEnvBubblewrap ({
        name = "openwrt-env";
        multiPkgs = null;
        inherit targetPkgs;
        extraOutputsToInstall = [ "dev" ];
        profile = ''
          export hardeningDisable=all
        '';
      } // extraAttrs);
      targetPkgs = pkgs: with pkgs; [
        binutils
        file
        fixWrapper
        gcc
        getopt
        gettext
        git
        gnumake
        openssl
        patch
        perl
        python2
        python3
        rsync
        subversion
        systemd
        unzip
        wget
        which

        ncurses
        zlib
        # zlib.static
        # glibc.static

        pkgconfig
      ];
    in {
      devShell = pkgs.mkShell {
        name = "openwrt";
        shellHook = let
          setup = pkgs.writeText "setup" ''
            cd $TMPDIR
            ${pkgs.rsync}/bin/rsync --chmod D+x,+r,u+w --exclude .keep -rlptD ${openwrt}/. ${./files}/. . 
            find ${./patches} -type f -name '*.patch' -exec patch '{}' ';';
          '';
        in "exec -- ${fhs { runScript = "bash --init-file ${setup}"; }}/bin/openwrt-env";
      };
    });
}