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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] llvm-core/clang-common-19.1.7::gentoo  USE="cet -bootstrap-prefix -default-compiler-rt -default-libcxx -default-lld -hardened -llvm-libunwind -verify-sig" 137939 KiB

Total: 1 package (1 new), Size of downloads: 137939 KiB