Week 4 lesson 2 - random marathon: rand, irand, mininotation randomness, scramble, shuffle, choose + more

Learning Tidalcycles course Week 4 - waveforms, randomness
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OK by trial and error, I found that if I add
:set -package random
at the top of BootTidal.hs and then reboot tidal then I can import System.Random with no error and then evaluate the do section.