anchor.diff:       bbmle \
        nlstools \
        drc \
  +     RNeXML \
  +     geiger \
  +     phytools \
     && installGithub.r \
       yihui/servr \ 
       cboettig/earlywarning \
  
positive.code: MAINTAINER Carl Boettiger cboettig@ropensci.org 
  
  ## Install additional R package dependencies ###
  RUN apt-get update && apt-get -y install r-cran-rjags \
    && install2.r --error -r http://cran.rstudio.com \
       FKF \
       dlm \
  
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
  