<b_jonas> slashlearn euclid//Euclid is a short geeky game in which the goal is to do Euclidean compass and straightedge constructions in as few steps as possible. It runs in the browser, found at "http://www.euclidthegame.com/". It was popular among #esoteric regulars in 2016-07.

#!/bin/bash
src=$(cat $1)
if ! ghc -e "$src" 2> /dev/null
then
    /opt/ghc/bin/runhaskell <<< $src
fi