anchor.diff: -{ stdenv, fetchurl, libgcrypt, libnl, pkgconfig, python2Packages, wireless-regdb }:
  +{ stdenv, fetchurl, fetchpatch, libgcrypt, libnl, pkgconfig, python3, wireless-regdb }:
   
   stdenv.mkDerivation rec {
     pname = "crda";
  
positive.code:     url = "http://kernel.org/pub/software/network/crda/crda-${version}.tar.xz";
    };
  
    buildInputs = [ libgcrypt libnl ];
    nativeBuildInputs = [
      pkgconfig python2Packages.m2crypto python2Packages.python
    ];
  
    postPatch = ''
  
negative.code:   doCheck = true;
    checkTarget = "verify";
  
    postInstall = ''
      # The patch installs build header
      rm $out/include/reglib/keys-gcrypt.h
    '';
  
    meta = with stdenv.lib; {
      description = "Linux wireless Central Regulatory Domain Agent";
      longDescription = ''
  