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

Calculating dependencies ... done!
Dependency resolution took 1.10 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libatomic_ops-7.10.0::gentoo  531 KiB
[ebuild  N     ] dev-util/cproto-4.8a::gentoo  USE="-verify-sig" 195 KiB
[ebuild  N     ] app-eselect/eselect-guile-20250224::gentoo  0 KiB
[ebuild  N     ] dev-libs/boehm-gc-8.2.12::gentoo  USE="large threads -cxx -static-libs" 1204 KiB
[ebuild  N     ] dev-scheme/guile-3.0.11-r1:3.0::gentoo  USE="deprecated jit networking nls regex threads -debug -debug-malloc" 5738 KiB
[ebuild  N     ] dev-scheme/slib-3.3.1-r100::gentoo  USE="-gambit -scm" GUILE_TARGETS="3-0 -2-2" 1083 KiB
[ebuild  N     ] dev-scheme/scm-5.5.6-r4::gentoo  USE="libscm ncurses readline -arrays -bignums -cautious -dynamic-linking -engineering-notation -gsubr -inexact -ioext -macro -posix -regex -sockets -unix" 892 KiB
[ebuild  N     ] app-text/rnv-1.7.11-r2::gentoo  138 KiB

Total: 8 packages (8 new), Size of downloads: 9777 KiB

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by app-text/rnv-1.7.11-r2::gentoo
# required by =app-text/rnv-1.7.11-r2 (argument)
=dev-scheme/scm-5.5.6-r4 libscm