anchor.diff:  # ------------------
   # Install Go
   # ------------------
  +ENV GOPATH $HOME/.go
   RUN cd $HOME && \
       mkdir $HOME/.go && \
       curl -L https://storage.googleapis.com/golang/go1.7.5.linux-amd64.tar.gz | tar zxv && \
       mv go /usr/local && \
       ls /usr/local/go/bin/ | sed 's;.*;ln -s /usr/local/go/bin/& /usr/local/bin/&;' | sh
  +
  +# ------------------
  +# Install pt (does not work...)
  +# ------------------
  +RUN cd $HOME && \
  +    /usr/local/go/bin/go get -u github.com/monochromegane/the_platinum_searcher/... && \
  +    curl -L https://github.com/monochromegane/the_platinum_searcher/releases/download/v2.1.5/pt_linux_amd64.tar.gz | tar zxv && \
  +    cp pt_linux_amd64/pt /usr/local/bin && \
  +    rm -rf pt_linux_amd64
  +
   
   # ------------------
   # Install fzy
  
positive.code:     apt install -y locales && \
      localedef -f UTF-8 -i ja_JP ja_JP.utf8 && \
      apt install -y git tmux vim curl make netcat libreadline-dev nkf
  
  # ------------------
  # Install Ruby
  
negative.code:     wget https://github.com/jhawthorn/fzy/releases/download/0.8/fzy_0.8-1_amd64.deb && \
      dpkg -i fzy_0.8-1_amd64.deb && \
      rm fzy_0.8-1_amd64.deb
  
  # ------------------
  # Install dein
  