DOT graph source https://github.com/UV-CDAT/uvcdat/issues/165

deps.dot

digraph G {
    //"core.uvcdat" -> uvcdat_cdms;
    //"gui.uvcdat" -> uvcdat_cdms;
    //"gui.uvcdat" -> vtDV3D [color=blue];
    //gui -> ParaView [color=darkgreen];
    //gui -> VisIt [color=darkgreen];
    //gui -> vtDV3D;


    cdat -> spreadsheet;

    ParaView -> spreadsheet;
    ParaView -> vtk;

    pvclimate -> uvcdat;
    pvclimate -> uvcdat_cdms;
    pvclimate -> spreadsheet [color=red];
    pvclimate -> vtk [color=grey];

    pylab -> spreadsheet;
    pylab -> uvcdat_cdms;

    uvcdat_cdms -> spreadsheet;
    uvcdat_cdms -> uvcdat;
    uvcdat_cdms -> vtDV3D [color=blue];

    VisIt -> uvcdat;
    VisIt -> uvcdat_cdms;
    VisIt -> spreadsheet [color=red];

    vtDV3D -> spreadsheet;
    vtDV3D -> vtk ;
    vtDV3D -> uvcdat;
    vtDV3D -> uvcdat_cdms;
    vtDV3D -> pylab [color=grey];

    vtk -> spreadsheet [color=red];

    // blue: temp stuff
    // grey: conditional dep
    // red: problem
    // darkgreen: not a problem, but not sure why needed
}