anchor.diff:      RPushbullet = [ pkgs.which ];
       qtpaint = [ pkgs.cmake ];
       qtbase = [ pkgs.cmake pkgs.perl ];
  -    gmatrix = [ pkgs.cudatoolkit ];
  +    gmatrix = [ pkgs.cudatoolkit pkgs.which ];
       RCurl = [ pkgs.curl.dev ];
       R2SWF = [ pkgs.pkgconfig ];
       rggobi = [ pkgs.pkgconfig ];
  
positive.code:     "smacof" # broken build
      "SNAGEE" # build is broken
      "snm" # depends on broken package nlopt
      "SOD" # depends on broken package cudatoolkit
      "sodium" # broken build
      "soilphysics" # depends on broken package rpanel
      "sortinghat" # broken build
  
negative.code:     "GEWIST" # depends on broken package nlopt
      "ggtree" # broken build
      "gimme" # depends on broken package nlopt
      "gMCP" # build is broken
      "gmum_r" # broken build
      "GPC" # broken build
      "gplm" # depends on broken package nlopt
      "gpuR" # depends on GPU-specific header files
      "granova" # depends on broken package nlopt
      "graphicalVAR" # depends on broken package nlopt
      "GraphPAC" # broken build
  