anchor.diff:  
       src = fetchurl {
         url = "mirror://kernel/linux/kernel/v3.x/${if testing then "testing/" else ""}linux-${version}.tar.xz";
  -      sha256 = "0b29ijg578nib9hxmzxsvi3jqydcbxdggp0n2k3x0bc14dwzyv0q";
  +      sha256 = "19paxvcs3bj32j5fp4ibx963la30p0331w7zvg3zcwmx0ml9pn9y";
       };
   
       config = configWithPlatform stdenv.platform;
  
positive.code:       TIMER_STATS y
        USB_SUSPEND y
        BACKTRACE_SELF_TEST n
        CPU_NOTIFIER_ERROR_INJECT n
        DEBUG_DEVRES n
        DEBUG_NX_TEST n
        DEBUG_STACK_USAGE n
  
negative.code: import ./generic.nix (
  
    rec {
      version = "3.3.2";
      testing = false;
  
      preConfigure = ''
  