Update shell.nix
to use LLVM 18 from nixpkgs-unstable
#14592
Closed
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The update to
nixpkgs-23.11
(#14269) showed some build errors due to missing symbols fromlibllvm_ext.o
.nixpkgs-unstable
already has LLVM 18 available, so we can switch to that and completely ditch llvm_ext.There are some spec failures in CI related to iconv.
Somebody should investigate that on a macOS machine.
nixpgs-24.05
is expected to be released in a couple of weeks, at which point we could switch back to a stable channel.Resolves #14269
Depends on #14590