[CI] Use existing clang, don't install using llvm.sh - #9087
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Ok, looks like this works, marking ready for review, and updated the description. Build times are too noisy to see if there is a speedup, but using the system clang is certainly saving some time, and can avoid errors like the one linked in the description that got me onto this. |
tlively
approved these changes
Sep 9, 2026
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llvm.shfrom the LLVM project is a standard way to get LLVM, butit downloads lots of stuff we don't need (edit: I
thought it was downloading all those things from the error, but actually
it is just updating package info; less silly but still wasteful overall)
We can just use clang from the runner in most cases. Do that,
and use a newer ubuntu in the one place we need newer clang
(for clang-format-21).