anchor.diff:    nativeBuildInputs = [ pkgconfig unzip ];
     buildInputs = [ SDL2 SDL2_ttf SDL2_image SDL2_mixer lua zlib ];
   
  +  postPatch = ''
  +    substituteInPlace configure.sh \
  +      --replace "/tmp/sdl-test" $(mktemp)
  +  '';
  +  
     configurePhase = ''
       { echo 2; echo $out; } | ./configure.sh
     '';
  
positive.code: 
    src = fetchurl {
      url = "mirror://sourceforge/project/instead/instead/${version}/instead_${version}.tar.gz";
      sha256 = "10bppcdjnd0all71l5akdvy7fx0c8s8x0za9qxszs8cjmlv9z1q0";
    };
  
    NIX_LDFLAGS = "-llua -lgcc_s";
  
negative.code: { stdenv, fetchurl, SDL2, SDL2_ttf, SDL2_image, SDL2_mixer, pkgconfig, lua, zlib, unzip }:
  
  let
    version = "3.3.2";
  
    # I took several games at random from http://instead.syscall.ru/games/
    games = [
  