anchor.diff:      && make -s install \
       && apk add --no-cache --virtual .postgis-rundeps \
           json-c \
  -    && apk add --no-cache --virtual .postgis-rundeps-edge \
  -        --repository http://dl-cdn.alpinelinux.org/alpine/edge/community \
  -        --repository http://dl-cdn.alpinelinux.org/alpine/edge/main \
           geos \
           gdal \
           proj \
  
positive.code:         libstdc++ \
      && cd / \
      && rm -rf /tmp/postgis-${POSTGIS_VERSION} \
      && apk del .fetch-deps .build-deps .build-deps-edge
  
negative.code:         llvm \
          clang \
          clang-dev \
          g++ \
          gdal-dev \
          geos-dev \
  