Rage: The real story is combining lage's dev ergonomics with BuildXL's
correctness at scale. Ken has wanted this synthesis for years since
co-creating lage. Frame the series around ergonomics vs correctness.
Cloudpack benchmarking: synthetic codebases generated from observed
attributes of real shipping code. Pipeline: observe real repo → produce
BenchProfile JSON → corpus_gen creates deterministic synthetic codebase
(same seed = byte-identical) → corpus_verify confirms conformance →
benchmark at various scales (100 to 50k modules).
Three TypeScript module variants (barrel, intermediate, leaf) with
realistic import structures, side effects, and ambient refs. JSON
configs, markdown docs fill out the shape. Tolerances: 2% file count,
5% byte/line count.
This solves 'we can't share the real codebase' for public benchmarks.
Worth a blog post on its own.
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Ken
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