darcs show dependencies라고 입력하면 다음과 같이 Graphviz DOT 코드를 출력해준다!

%0 1a66e7eb Initial commit f55ce246 Book.hs: Extract file handle allocation into fileResource function f55ce246->1a66e7eb 227e4ff1 feat: Add greeting text file I/O with uppercase printing 227e4ff1->f55ce246 771b32dc Add `repeatUntilIO` helper and use it in `printFileContentsUpperCase2` 771b32dc->227e4ff1

(해커즈 퍼브에서는 graphviz를 지원합니다!)

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