[ci] Make PR validation use freshly-built bootstrap cells.#82
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vgvassilev merged 1 commit intoJun 15, 2026
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When a PR shifts a bootstrap recipe's content hash (e.g. an llvm-release cmake change), dependent recipes that fetch it (llvm-msan) can't find the new cell on Releases and PR validation fails. The workaround was to split into two PRs and merge the bootstrap one first. Phase validate-on-pr like push-to-main: bootstraps run first and upload their install tree as an artifact, dependents wait and read it back via a file:// cache base. fetch_bootstrap's existing path then resolves as if Releases already had the new cell.
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When a PR shifts a bootstrap recipe's content hash (e.g. an llvm-release cmake change), dependent recipes that fetch it (llvm-msan) can't find the new cell on Releases and PR validation fails. The workaround was to split into two PRs and merge the bootstrap one first.
Phase validate-on-pr like push-to-main: bootstraps run first and upload their install tree as an artifact, dependents wait and read it back via a file:// cache base. fetch_bootstrap's existing path then resolves as if Releases already had the new cell.