[everdev]

> I'm not about to roll my own datetime library or my own crypto library.

Same, but it's nice if those libraries have zero dependencies so when you include them in your project you know exactly what you're getting.

[wwweston]

This. It's not that I want to avoid any dependency -- I'm more than happy to use a well-crafted library or tool that provides an abstraction that neatly covers a problem domain. But at some point the depth and complexity of the dependency tree can make it difficult for a package manager to keep in a correct state, which speaks to the opacity anyone who attempts to manually map it is going to end up confronting.