anchor.diff:     lazyeval_0.2.2.tar.gz \
      utf8_1.1.4.tar.gz \
      fansi_0.4.0.tar.gz \
  +   zeallot_0.1.0.tar.gz \
      vctrs_0.1.0.tar.gz \
      pillar_1.4.1.tar.gz \
      pkgconfig_2.0.2.tar.gz \
  
positive.code: # install sparklyr so we can do Spark via Livy
  RUN DEBIAN_FRONTEND=noninteractive wget \
     https://archive.linux.duke.edu/cran/src/contrib/config_0.3.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/dbplyr_1.3.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/rappdirs_0.3.1.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/r2d3_0.2.3.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/forge_0.2.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/sparklyr_1.0.0.tar.gz
     
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     config_0.3.tar.gz \
     dbplyr_1.3.0.tar.gz \
     rappdirs_0.3.1.tar.gz \
     r2d3_0.2.3.tar.gz \
     forge_0.2.0.tar.gz \
     sparklyr_1.0.0.tar.gz
     
  RUN rm \
    config_0.3.tar.gz \
    dbplyr_1.3.0.tar.gz \
    rappdirs_0.3.1.tar.gz \
    r2d3_0.2.3.tar.gz \
    forge_0.2.0.tar.gz \
    sparklyr_1.0.0.tar.gz
  
  
  # some more TeX so that papaja can be installed and students can create APA templates in Rmarkdown
  
negative.code: RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     RColorBrewer_1.1-2.tar.gz \
     maps_3.3.0.tar.gz \
     zoo_1.8-6.tar.gz \
     gcookbook_2.0.tar.gz \
     corrplot_0.84.tar.gz 
  
  