anchor.diff:  export R_LIBS=~/build/revdeplib/
   export R_LIBS_SITE=none
   export _R_CHECK_FORCE_SUGGESTS_=false         # in my profile so always set
  -R350
  +R
   .libPaths()   # should be just 2 items: revdeplib and the base R package library
   update.packages(ask=FALSE)
   # if package not found on mirror, try manually a different one:
  
positive.code: find . -name 00check.log | grep -E 'AFM|easycsv|...|optiSel|xgboost' | xargs grep -H . > /tmp/out.log
  # For RxmSim: export JAVA_HOME=/usr/lib/jvm/java-8-oracle
  more <failing_package>.Rcheck/00check.log
  R350 CMD check <failing_package>.tar.gz
  R350 CMD INSTALL ~/data.table_1.9.6.tar.gz   # CRAN version to establish if fails are really due to data.table
  R350 CMD check <failing_package>.tar.gz
  ls -1 *.tar.gz | grep -E 'Chicago|dada2|flowWorkspace|LymphoSeq' | parallel ~/build/R-3.5.0/bin/R CMD check &
  
  # Warning: replacing previous import robustbase::sigma by stats::sigma when loading VIM
  
negative.code:   all = system("ls *.tar.gz", intern=TRUE)
    all = sapply(strsplit(all, split="_"),'[',1)
    for (i in all[!all %in% deps]) {
      cat("Removing",i,"because it", if (!i %in% rownames(avail)) "has been removed from CRAN/Bioconductor\n" else "no longer uses data.table\n")
      system(paste0("rm ",i,"_*.tar.gz"))
    }
  }
  