anchor.diff:  #    forecast_8.4.tar.gz \
       ROCR_1.0-7.tar.gz \
       reticulate_1.10.tar.gz \
  -    tfruns_1.4.tar.gz \ 
  +    tfruns_1.4.tar.gz \
       tensorflow_1.9.tar.gz \
  +    zeallot_0.1.0.tar.gz \
       keras_2.2.0.tar.gz \
   #    rstan_2.17.3.tar.gz  \
       tidybayes_1.0.1.tar.gz  \
  
positive.code:     fields_9.6.tar.gz \
  #    forecast_8.4.tar.gz \
      reticulate_1.10.tar.gz \
      tfruns_1.4.tar.gz \ 
      tensorflow_1.9.tar.gz \
      keras_2.2.0.tar.gz \
  #    rstan_2.17.3.tar.gz  \
      tidybayes_1.0.1.tar.gz  \
  
negative.code:     https://mirrors.nics.utk.edu/cran/src/contrib/reticulate_1.10.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/tfruns_1.4.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/tensorflow_1.9.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/zeallot_0.1.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/keras_2.2.0.tar.gz \
  #    https://mirrors.nics.utk.edu/cran/src/contrib/rstan_2.17.3.tar.gz  \
      https://mirrors.nics.utk.edu/cran/src/contrib/tidybayes_1.0.1.tar.gz  \
  