feat(cdn): enable per-R-minor routing in production #184
2026-08-31
feat(cdn): enable per-R-minor routing in production
Everything built today is unreachable until this is set. An R 4.6.1 client on amd64/resolute resolves against the generic index, downloads the 4.5-built rlang (2079570 bytes) and dies at load with 'undefined symbol: SETLENGTH', while the correct 4.6 build (2075106 bytes) sits unused one directory away. Verified on the staging zone first, which runs the same script against the same origin: 16/16 slots report zero regressions against the generic slot, an excluded R minor is sent to CRAN for sources, a client that reports no R minor still gets the generic index, and tarball requests are never rewritten. Coverage on a non-primary minor drops where the per-minor build backlog has not been worked off - resolute serves a 4.6 client 22169 packages rather than the generic slot's 24310. Those are ABI-risky packages built under another minor: the ones this removes are the ones that would have failed at load.