7z x -oclang-rust/ "LLVM-${LLVM_VERSION}-win64.exe"
ciCommandSetEnv RUST_CONFIGURE_ARGS \
"${RUST_CONFIGURE_ARGS} --set llvm.clang-cl=$(pwd)/clang-rust/bin/clang-cl.exe"
+
+ # Disable downloading CI LLVM on this builder;
+ # setting up clang-cl just above conflicts with the default if-available option.
+ ciCommandSetEnv NO_DOWNLOAD_CI_LLVM 1
fi
if isWindows; then