When you know you’re a geek, part 145: a slideshow needs to be prepared for a talk in a couple of days. So, you think that instead of writing the slides directly in LaTeX Beamer code (of course, anything like PowerPoint or Keynote is beyond the pale), you should write them in markdown, since that’s so nicely uncluttered. This of course means that you need a conversion engine to convert markdown source to beamer source. Enter pandoc. This of course means that you need Haskell installed, which is of course best done by running Homebrew, which doesn’t seem to be on the laptop yet. So, first step is updating XCode since Homebrew relies on that and of course, everything needs to be up-to-date so that the slide-writing can happen in a spic-and-span system. This is when you remember the first time you saw Hans Kamp give a talk: with overhead transparencies that he had handwritten on the flight over.