Ciaran McCreesh wrote:
> Do we need || dependencies? If so, why? What are they used for?

I can think of a case where || dependencies could be useful:

The Ada frontend from gcc can either be build using gnat or gcc[ada], right?
The || dependency could be used for this, although a virtual could be used,
too.

Another example would be the phonon implementation from QT and KDE.

In principle: || dependencies seem to be useful for dependencies that are
provided by two packages, but that are essentially the same. Although virtuals
might be the cleaner solution. I'm not sure about this.

Regards,

Markus

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