anchor.diff:     https://archive.linux.duke.edu/cran/src/contrib/assertthat_0.2.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/lazyeval_0.2.1.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/rlang_0.2.2.tar.gz \
  -   https://archive.linux.duke.edu/cran/src/contrib/cli_1.0.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/utf8_1.1.4.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/crayon_1.3.4.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/fansi_0.3.0.tar.gz \
  
positive.code:     listenv_0.7.0.tar.gz \
      processx_3.2.0.tar.gz \
      clipr_0.4.1.tar.gz \
      callr_3.0.0.tar.gz \
      tidyverse_1.2.1.tar.gz \
      promises_1.0.1.tar.gz \
      future_1.9.0.tar.gz \
  
negative.code:    https://archive.linux.duke.edu/cran/src/contrib/bitops_1.0-6.tar.gz
  
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     callr_3.2.0.tar.gz
     cli_1.1.0.tar.gz \
     pkgbuild_1.0.2.tar.gz \
     pkgload_1.0.2.tar.gz \
     rcmdcheck_1.3.2.tar.gz \
     remotes_2.0.2.tar.gz
     sessioninfo_1.1.1.tar.gz
     usethis_1.4.0.tar.gz \
     jsonlite_1.6.tar.gz \
     memoise_1.1.0.tar.gz \
     whisker_0.3-2.tar.gz \
  