I'm trying to write a latex sty file to change the default behavior of sagetex.
My file is
\NeedsTeXFormat{LaTeX2e}[1994/06/01]
\ProvidesPackage{examplepackage}[2018/12/24 examplepackage]
\RequirePackage{sagetex}
\RequirePackage{etoolbox}
\AtBeginDocument{%
\begin{sagesilent}
A = 3
\end{sagesilent}
}
\endinput
However, attempting to use this sty file in the following latex file produces the error ! File ended while scanning use of \next.
\documentclass[12pt]{article}
\usepackage{stupid}
\begin{document}
hello world!
\end{document}
What's wrong with my sty file?
