User:Jens3/lowdown as replacement for pandoc

Emerging app-text/pandoc doesn't work on arm64 since dev-haskell/cabal cannot be compiled.

app-text/lowdown is a replacement for some functions of pandoc. It can convert from lowdown, a markdown dialect, to "HTML5, roff documents in the ms and man formats, LaTeX, gemini, OpenDocument, and terminal output" as of version 0.11.2.

The syntax of the lowdown options is similar to pandoc:

user $lowdown -thtml -s -o busybox.html busybox.md

Other commandline converters can be found in the category app-text.