anchor.diff:  # Install icestorm dependencies
   RUN pacman -S --noconfirm libftdi-compat python
   
  -ENV ICESTORM_REVISION da6ad20dba07ecb49b33323e9e3bf667786645b3
  -USER turbo
  -RUN git clone https://aur.archlinux.org/icestorm-git.git \
  -    && cd icestorm-git \
  -    && sed -i "s icestorm\.git icestorm\.git#commit=$ICESTORM_REVISION " PKGBUILD \
  -    && makepkg --clean
  -USER root
  -RUN pacman -U --noconfirm icestorm-git/icestorm-git*pkg*
  -
   # Build Yosys
   ENV YOSYS_REVISION ab0c44d3ed81f71cb0c6ff844679110cc27b38ad
   USER turbo
  
positive.code:     $CHISEL_JAR \
      && install -Dm644 $CHISEL_JAR /usr/share/scala/chisel/chisel.jar
  
  # Assume user is going to be mounting his local repo at /mnt/turborav
  WORKDIR /mnt/turborav/hw
  USER turbo
  
negative.code:     && cd yosys-git \
      && sed -i "s yosys\.git yosys\.git#commit=$YOSYS_REVISION " PKGBUILD \
      && makepkg --clean
  USER root
  RUN pacman -U --noconfirm yosys-git/yosys-git*pkg*
  
  # Install chisel from Maven
  USER root
  