anchor.diff:      https://archive.linux.duke.edu/cran/src/contrib/rex_1.1.2.tar.gz \
       https://archive.linux.duke.edu/cran/src/contrib/stringdist_0.9.5.1.tar.gz \
       https://archive.linux.duke.edu/cran/src/contrib/praise_1.0.0.tar.gz \
  -    https://archive.linux.duke.edu/cran/src/contrib/clisymbols_1.2.0.tar.gz \
       https://archive.linux.duke.edu/cran/src/contrib/ini_0.3.1.tar.gz \
       https://archive.linux.duke.edu/cran/src/contrib/profmem_0.5.0.tar.gz \
       https://archive.linux.duke.edu/cran/src/contrib/bench_1.0.1.tar.gz 
   
   RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
  -    clipr_0.4.1.tar.gz \
       modelr_0.1.2.tar.gz \
  -    reprex_0.2.0.tar.gz \
  + fs_1.2.7.tar.gzprex_0.2.0.tar.gz \
       tidyverse_1.2.1.tar.gz \
       promises_1.0.1.tar.gz \
       globals_0.12.2.tar.gz \
  
positive.code:    https://archive.linux.duke.edu/cran/src/contrib/rcmdcheck_1.3.2.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/remotes_2.0.2.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/xopen_1.0.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/sessioninfo_1.1.1.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/usethis_1.4.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/sys_3.1.tar.gz \
  
negative.code:     https://archive.linux.duke.edu/cran/src/contrib/styler_1.0.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/lintr_1.0.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/testthat_2.0.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/reprex_0.2.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/microbenchmark_1.4-4.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/modelr_0.1.2.tar.gz \
    fs_1.2.7.tar.gzps://archive.linux.duke.edu/cran/src/contrib/globals_0.12.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/listenv_0.7.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/iterators_1.0.10.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/enc_0.2.0.tar.gz \
  