Comment 3 for bug 516496

Of course, the above relies on the premise that it would be OK for us to create a recipe based on the SPR but slightly altered with SPRBuild constraints. Maybe that's a bad idea. That is, it's really treating SourcePackageRecipe as a 'base' recipe from which we can derive variants for the SPRBuilds.

It would require us, rather than having ISPR.builder_recipe to instead provide ISPR.getBuilderRecipe(**kwargs).

Is that a really bad thing? Is it an option for us? (as there are other features that seem to be important that would currently rely on this too, like multiple SPRBuilds for different distroseries from the one recipe).