Yep, I just say "Package Manager" - do you think I need be specific ? I ask because I personally dont use USC, I prefer Synaptic, its always the very first thing I install.
Every distro has its own "package manager" - I'd like to be general where we can but not at the risk of clarity.....
Yes, I think we should make it clearer that the distro packages are always suspect from a currency view.
Your third point is one we need to drill down on. My tests show using fpc form Ubuntu is fine with both SourceForge and built from src Lazarus. Have you seen otherwise ?
Or do you mean using (eg) Ubuntu Lazarus with SourceForge FPC ? I'd consider that very brave, would not advise that at all.
And maybe its why my favourite model, building Lazuras from source works well ? Then, apt does not know about Lazarus at all, so no repository conflicts possible ?