[Nullabillity]

Having tried both, focusing on source dependencies is the only way to make sure that dependency sources are universally available and buildable, which makes a huge difference in the long run. Just look at NuGet's issues getting SourceLink adopted.

Binary caching á la Nix can work, but I can't really see that working out without Nix's commitment to environment purity.

[pjmlp]

When one is lucky to use server hardware as workstation, and works in domains that don't depend on selling binary libraries for their business.

[Nullabillity]

> When one is lucky to use server hardware as workstation

Sounds like something is pretty screwed up if you're running cargo clean as part of your regular workflow.

> works in domains that don't depend on selling binary libraries for their business

Play stupid games, win stupid prizes? Meh.