[r4indeer]

> What if they don't have packages you need?

Unlikely. But if so, you can provide the packages yourself: https://info.arxiv.org/help/submit_tex.html#wegotem

> What if your paper isn't written with LaTeX?

Then they still accept PDF or HTML. See: https://info.arxiv.org/help/submit/index.html#formats-for-te...