Hi there—
I am unable to use LaTeX and friends. I get this error:
```
$ cat apen.tex
\documentclass{article}
\author{Marco}
\title{Een titel}
\begin{document}
\maketitle
Wat een rare jongens!
\end{document}
$ latex apen
This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live 2018) (preloaded
format=latex)
restricted \write18 enabled.
entering extended mode
(./apen.tex
LaTeX2e <2018-04-01> patch level 2
Babel <3.18> and hyphenation patterns for 84 language(s) loaded.
! LaTeX Error: File `article.cls' not found.
Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: cls)
Enter file name:
```
I am using the big texlive@20180414 package. Is this a known issue?
Can I do something to test the more modular set-up of TeX Live?
—Marco
