grace is easy enough (and we have it in our local repo), but it
needs fftw (and the old version 2 at that), and pdflib which I'm
not 100% sure about the licence.  Historically we have used our
own builds of fftw (2 and 3) so our grace is packages to need those
rather than ones you are more likely to have (e.g. from dag/atrpms)
and our fftw clashes with those...

Someone who understands the internals could probably get grace to
use the new fftw-3 api which would avoid the need to use the ancient
version...