anchor.diff:    && rm python.tar.xz \
     \
     && apk add --no-cache --virtual .build-deps  \
  +    build-base \
       bzip2-dev \
       coreutils \
       dpkg-dev dpkg \
  
positive.code:     libc-dev \
      libffi-dev \
      libnsl-dev \
      libtirpc-dev \
      linux-headers \
      make \
      ncurses-dev \
      openssl-dev \
      pax-utils \
      readline-dev \
      sqlite-dev \
      tcl-dev \
  
negative.code:     tk-dev \
      xz-dev \
      zlib-dev \
  
  # add build deps before removing fetch deps in case there's overlap
    && apk del .fetch-deps \
    \
  