anchor.diff:      ## composer
       && wget -q -O - https://getcomposer.org/installer \
            | php --  --install-dir=/usr/local/bin --filename=composer \
  -    ## xdebug
  +    ## build pecl package
       && apk --no-cache add --virtual .builddeps \
           autoconf \
           automake \
           bash \
  -        build-base \  
  +        build-base \
           file \
           git \
           re2c \
  
positive.code:     && apk --no-cache add --virtual .builddeps.edge \
          --repository http://dl-cdn.alpinelinux.org/alpine/edge/community/ \
          php${PHP_VERSION_MAJOR}-dev \
      && wget -q -O - https://pecl.php.net/get/xdebug-${PECL_XDEBUG_VERSION}.tgz \
          | tar -xzf - -C /tmp \
      && cd /tmp/xdebug-${PECL_XDEBUG_VERSION} \
      && phpize \
      && ./configure --prefix=/usr \
      && make \
      && make test \
      && make install \
      && rm -rf /tmp/xdebug* \
      ## yaml
      && wget -q -O - https://pecl.php.net/get/yaml-${PECL_YAML_VERSION}.tgz \
          | tar -xzf - -C /tmp \
  
negative.code:         php${PHP_VERSION_MAJOR}-phar \
  #        php${PHP_VERSION_MAJOR}-readline \
          php${PHP_VERSION_MAJOR}-session \
          php${PHP_VERSION_MAJOR}-xdebug \
          php${PHP_VERSION_MAJOR}-xml \
          php${PHP_VERSION_MAJOR}-zip \
          php${PHP_VERSION_MAJOR}-zlib \
  