I guess most of the times I've needed one PPA to depend on another it has been for both build and runtime dependencies. Perhaps that is because I've mainly been working with Python stuff where there isn't as big a distinction, but I'd be inclined to believe that most of the build time dependencies are going to be runtime dependencies too.
Are there particular downsides you see to adding the extra sources.list lines?
I guess most of the times I've needed one PPA to depend on another it has been for both build and runtime dependencies. Perhaps that is because I've mainly been working with Python stuff where there isn't as big a distinction, but I'd be inclined to believe that most of the build time dependencies are going to be runtime dependencies too.
Are there particular downsides you see to adding the extra sources.list lines?