I've recently started a new MacTeX/TeXShop/LaTeX project after an interval of 6 or 7 years away from it all. I thought for my new project I would use the memoir package in conjunction with the subfiles package and with LuaLaTeX.

The problem is that when I go to typeset my .tex file that the TeXShop console says

! LaTeX Error: File `memoir.sty' not found

When I run TeX Live Utility app it tells me that memoir is installed, but when I do a find I don't see memoir.sty:

$ cd /
$ find . -name "*memoir.sty" -print

Is this a known problem with MacTex or am I doing something wrong?

  • What do you get if you type kpsewhich memoir.cls at a command prompt?
    – Mico
    Apr 14, 2020 at 17:05

1 Answer 1


memoir is a documentclass, not a package. So you load it like this:



  • Thanks, Alan. My problem was that I was doing both. It is a bit confusing, though. In Section 3 of The Unofficial Guide to LaTeX2e (dated 2018) the author (not yourself) says that the only classes built into LaTeX are: article, book, letter, report, and slides, and that "Many other document classes are available as separate packages..." Apr 14, 2020 at 18:30
  • 2
    Unfortunately a very poor choice of words. :)
    – Alan Munn
    Apr 14, 2020 at 18:42

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