DRY compiling!
summary
A tool called hoarder sbt plugin reuses classfiles plus Zinc analysis to avoid rebuilding from scratch, claiming a demo full build drop from ~3 minutes to ~4 seconds and production wins in a 2M‑LOC monorepo (200 devs, 13 merges/day) that cut some full builds from ~14 to ~8 minutes and normal builds to ~20–25. Workflows are stash apply (local), CI PR verification with S3 or artifact upload, and a beta compile harder caches release loader; limitations include absolute‑path, line‑ending and macro edge cases.
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