These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] llvm-runtimes/clang-rtlib-config-18:18::gentoo  USE="-default-compiler-rt" 0 KiB

Total: 1 package (1 new), Size of downloads: 0 KiB