anchor.diff:  
   RUN curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | python
   
  -ENV PATH="/home/ubuntu/.poetry/bin:$PATH"
  -RUN cp -r $HOME/.poetry/lib/poetry/_vendor/py3.7 $HOME/.poetry/lib/poetry/_vendor/py3.8
  +ENV PATH="${HOME}/.poetry/bin:$PATH"
  +RUN cp -r ${HOME}/.poetry/lib/poetry/_vendor/py3.7 ${HOME}/.poetry/lib/poetry/_vendor/py3.8
   RUN poetry config settings.virtualenvs.in-project false
   
   # npm
  
positive.code: 
  # Pipenv
  
  ENV PATH="/home/ubuntu/.local/bin:$PATH"
  
  RUN pip install --user pipenv
  
  
negative.code: # Cargo
  
  ENV RUST_BACKTRACE=1 \
    PATH=${HOME}/.cargo/bin:$PATH
  
  RUN set -ex ;\
    curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain none -y ; \
  