[csw-maintainers] excluding components from a package

[Peter FELECAN]

I have an issue as follows:

- package pp has in its PKGFILES a set of files fp, explicitly defined
- package pd has in its PKGFILES a set of file fd, implicitly defined
  through PKGFILES_DEVEL macro
- the packages are defined in pp, pd order
- the fp set is include in the fd set

How can I exclude from fd the content of fp, i.e. complement it?

Is there a known way or should I resort to my magic wand?

TIA for any answer
-- 
Peter