Base implementation by stevengeeky (https://github.com/stevengeeky) and mofas (https://github.com/mofas)
raco pkg install https://github.com/stevengeeky/racket-piet.git
Make a new example.rkt
file and in DrRacket type
#lang racket-piet
codal-size 11
Make sure you include the image in the file, since the image is the program to run.
If you're going to run the above program, make sure you right-click and save the image first, then insert it into DrRacket by going to Insert->Image. If you copy and paste the image into DrRacket, it will have antialiasing and will not be correctly compiled.
Courtesy of http://www.dangermouse.net/esoteric/piet/samples.html
All of these programs have a codal size of 11.