anchor.diff:     htmltools_0.3.5.tar.gz \
      caTools_1.17.1.tar.gz \
      bitops_1.0-6.tar.gz \
  -   digest_0.6.10.tar.gz \
  +   digest_0.6.12.tar.gz \
      mime_0.5.tar.gz
   
   # dependency for R XML library
  
positive.code: 
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     jsonlite_1.1.tar.gz \
     digest_0.6.10.tar.gz \
     memoise_1.0.0.tar.gz \
     whisker_0.3-2.tar.gz \
     bitops_1.0-6.tar.gz \
  
negative.code: RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     bitops_1.0-6.tar.gz \
     caTools_1.17.1.tar.gz \
     digest_0.6.12.tar.gz \
     Rcpp_0.12.9.tar.gz \
     htmltools_0.3.5.tar.gz \
     yaml_2.1.14.tar.gz \
  