anchor.diff:      inherit freetype fontconfig gettext gperf curl
         libjpeg libtiff libpng libxml2 libxslt sqlite
         icu cairo perl intltool automake libtool
  -      pkgconfig autoconf;
  +      pkgconfig autoconf bison;
       flex = flex2535;
  -    bison = bison23;
     };
   
     wxGTK = wxGTK26;
  
positive.code:   You need to use texLiveAggregationFun to regenerate, say, ls-R (TeX-related file list)
    Just installing a few packages doesn't work.
    */
    texLiveAggregationFun = 
      (builderDefsPackage (import ../misc/tex/texlive/aggregate.nix));
  
    texLiveContext = builderDefsPackage (import ../misc/tex/texlive/context.nix) {
  
negative.code:   /*
    hyppocampusFun = lib.sumArgs ( selectVersion ../tools/misc/hyppocampus "0.3rc1") {
      inherit builderDefs stdenv fetchurl libdbi libdbiDrivers fuse
        pkgconfig perl gettext dbus dbus_glib pcre libscd bison;
      inherit (gtkLibs) glib;
      flex = flex2533;
    };
    */
  