anchor.diff:      "CARrampsOcl" # depends on OpenCL
       "CHAT" # requires DNAcopy
       "ChemoSpec" # depends on broken speaq
  +    "Crossover" # fails self-test
       "classGraph" # requires graph, and Rgraphviz
       "clpAPI" # requires clp
       "compendiumdb" # requires Biobase
  
positive.code:     "spocc" # requires leafletR
      "SQDA" # requires limma
      "Statomica" # requires Biobase, multtest
      "stpp" # requires spatstat
      "structSSI" # requires multtest
      "strum" # requires Rgraphviz
  
negative.code:     "optBiomarker" # requires rpanel
      "ora" # requires ROracle
      "orQA" # requires genefilter
      "pRF" # requires multtest
      "PBSmapping" # fails its test suite for unclear reasons
      "PBSddesolve" # fails its test suite for unclear reasons
      "PairViz" # requires graph
      "PANDA" # requires GO.db
      "ParDNAcopy" # requires DNAcopy
  