anchor.diff: -{ stdenv, fetchurl, pkgconfig, pcre, libxml2, zlib, attr, bzip2, which, file
  +{ stdenv, fetchurl, pkgconfig, pcre, libxml2, zlib, bzip2, which, file
   , openssl, enableMagnet ? false, lua5_1 ? null
   , enableMysql ? false, mysql ? null
   , enableLdap ? false, openldap ? null
   , enableWebDAV ? false, sqlite ? null, libuuid ? null
  +, enableExtendedAttrs ? false, attr ? null
   , perl
   }:
   
  
positive.code:     description = "Lightweight high-performance web server";
      homepage = http://www.lighttpd.net/;
      license = stdenv.lib.licenses.bsd3;
      platforms = platforms.linux;
      maintainers = [ maintainers.bjornfor ];
    };
  }
  
negative.code:                 ++ stdenv.lib.optional enableMysql "--with-mysql"
                  ++ stdenv.lib.optional enableLdap "--with-ldap"
                  ++ stdenv.lib.optional enableWebDAV "--with-webdav-props"
                  ++ stdenv.lib.optional enableWebDAV "--with-webdav-locks"
                  ++ stdenv.lib.optional enableExtendedAttrs "--with-attr";
  
    preConfigure = ''
      sed -i "s:/usr/bin/file:${file}/bin/file:g" configure
  