anchor.diff:     https://mirrors.nics.utk.edu/cran/src/contrib/prettyunits_1.0.2.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/progress_1.1.2.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/GGally_1.3.1.tar.gz \
  -   https://mirrors.nics.utk.edu/cran/src/contrib/mosaic_0.14.4.tar.gz 
  +   https://mirrors.nics.utk.edu/cran/src/contrib/ggformula_0.5.tar.gz \
  +   https://mirrors.nics.utk.edu/cran/src/contrib/mosaicCore_0.2.0.tar.gz \
  +   https://mirrors.nics.utk.edu/cran/src/contrib/mosaic_1.0.0.tar.gz 
   
   RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
      SparseM_1.77.tar.gz \
  
positive.code:    prettyunits_1.0.2.tar.gz \
     progress_1.1.2.tar.gz \
     GGally_1.3.1.tar.gz \
     mosaic_0.14.4.tar.gz 
  
  # Cliburn Chan requested these:
  RUN DEBIAN_FRONTEND=noninteractive wget \
  
negative.code:    stringr_1.2.0.tar.gz \
     knitr_1.16.tar.gz \
     yaml_2.1.14.tar.gz \
     Rcpp_0.12.12.tar.gz \
     htmltools_0.3.6.tar.gz \
     caTools_1.17.1.tar.gz \
     bitops_1.0-6.tar.gz \
  