anchor.diff:  # make sure things are pretty
   ENV LANG C.UTF-8
   ENV TERM xterm-256color
  -RUN cp /etc/skel/.bashrc /root/ \
  -	&& sed -ri 's/^#(force_color_prompt=yes)/\1/' /root/.bashrc
  +RUN cp /etc/skel/.bashrc ~/ \
  +	&& sed -ri 's/^#(force_color_prompt=yes)/\1/' ~/.bashrc
   
   # quilt is much amaze: https://wiki.debian.org/UsingQuilt#Using_quilt_with_Debian_source_packages
   ENV QUILT_PATCHES debian/patches
   ENV QUILT_REFRESH_ARGS -p ab --no-timestamps --no-index
   
  -ADD scripts /tianon
  -
  -CMD ["bash"]
  +COPY scripts /tianon
  
positive.code: 
  # normal build deps
  RUN apt-get update && apt-get install -y \
  		build-essential \
  		devscripts \
  		dh-make \
  
negative.code: 		python-distro-info \
  		python3-debian \
  		quilt \
  		--no-install-recommends \
  	&& rm -rf /var/lib/apt/lists/*
  
  # need deb-src for compiling packages
  RUN sed -i 'p; s/^deb /deb-src /' /etc/apt/sources.list /etc/apt/sources.list.d/experimental.list
  
  # tianon is _really_ lazy, and likes a preseeded bash history
  ENV HOME /root
  