I wonder how much software will be unbuildable in 10 years time, due to dependencies that can no longer be downloaded. Is there an archive.org for packages?
At least this dependency makes sense: mime type parsing is nontrivial and something you'd logically want to leverage a library for. I can't comprehend how somebody could ever have said "I need left padding. I wonder if there's a library for that somewhere?"
I really do wonder about the long term sustainability of package systems. The oldest business software, think COBOL, still works because it can still run the way it did when it was created. Will I be able to say the same about my software in 50+ years?