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

Calculating dependencies ... done!
Dependency resolution took 1.07 s (backtrack: 0/20).

[ebuild  N     ] net-libs/libproxy-0.5.12-r1::gentoo  USE="-duktape -gnome -gtk-doc -introspection -test -vala" 60 KiB
[ebuild  N     ] gnome-base/gsettings-desktop-schemas-50.1::gentoo  USE="-introspection" 876 KiB
[ebuild  N     ] net-libs/glib-networking-2.80.1::gentoo  USE="gnome libproxy ssl -test" 285 KiB
[ebuild  N     ] net-libs/libsoup-2.74.3-r1:2.4::gentoo  USE="ssl -brotli -gssapi -gtk-doc -introspection -samba -sysprof -test -vala" 1470 KiB
[ebuild  N     ] net-libs/uhttpmock-0.5.5-r1::gentoo  USE="-gtk-doc -introspection -vala" 46 KiB

Total: 5 packages (5 new), Size of downloads: 2735 KiB