If we can obtain cache hit statistics, we may be able to better determine which packages are truly unused. Is this possible (considering our reliance on S3 and CDN?)
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Yes: infra/metrics/fastly/README.md at 45208209bc8f652c239b06c8c477092657cbd2c4 · NixOS/infra · GitHub
But you’ll find that the data is noisy and hard to make sense of.
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