see this page to see what the what. This is all ruby solutions to the puzzles being revealed there.
run make DAY_SELECTOR=day_x puzzles
to run the tests for a desired day e.g. make DAY_SELECTOR=day_2 puzzles
to run day 2
or make puzzles
to run all specs
run make watch
which uses watchman-make to run the tests for any of the days when their code or tests are changed.
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