anchor.diff:      stringdist_0.9.5.1.tar.gz \
       enc_0.2.0.tar.gz \
       rematch2_2.0.1.tar.gz \
  -    ps_1.1.0.tar.gz \
       globals_0.12.2.tar.gz \
       iterators_1.0.10.tar.gz \
       listenv_0.7.0.tar.gz \
  
positive.code:    https://archive.linux.duke.edu/cran/src/contrib/bitops_1.0-6.tar.gz
  
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     processx_3.3.0.tar.gz \
     R6_2.4.0.tar.gz \
     callr_3.2.0.tar.gz \
  
negative.code:    bitops_1.0-6.tar.gz \
     RCurl_1.95-4.12.tar.gz \
     plyr_1.8.4.tar.gz \
     httr_1.4.0.tar.gz \
     rstudioapi_0.10.tar.gz \
     sys_3.1.tar.gz \
  