anchor.diff:  MAINTAINER Carl Boettiger cboettig@ropensci.org 
   
   ## Install additional R package dependencies ###
  -RUN apt-get update && apt-get -y install r-cran-rjags \
  +RUN apt-get update && apt-get -y install -t unstable r-cran-rjags \
     && install2.r --error -r http://cran.rstudio.com \
        FKF \
        dlm \
  
positive.code:      bbmle \
       nlstools \
       drc \
    && installGithub.r \
      yihui/servr \ 
      cboettig/earlywarning \
  
negative.code:     ropensci/RNeXML \
      richfitz/drat.builder \
      ropensci/ropkgs \
    && install2.r --repo http://packages.ropensci.org --error \
      rrdf \
      Sxslt \
    && rm -rf /tmp/downloaded_packages
  
  # break cache first
  COPY Dockerfile /tmp/Dockerfile
  