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

Calculating dependencies ... done!
Dependency resolution took 1.61 s (backtrack: 0/20).

[ebuild  N     ] dev-lang/luajit-2.1.1787165859:2/2.1.1787165859::gentoo  USE="-lua52compat -static-libs" 1078 KiB
[ebuild  NS    ] dev-lang/lua-5.1.5-r200:5.1::gentoo [5.4.8:5.4::gentoo] USE="deprecated readline" 389 KiB
[ebuild  N     ] dev-lua/LuaBitOp-1.0.3::gentoo  LUA_TARGETS="lua5-1 -lua5-3 -lua5-4 -luajit" 20 KiB
[ebuild  N     ] dev-lua/luaexpat-1.5.2::gentoo  LUA_TARGETS="lua5-1 -lua5-3 -lua5-4 -luajit" 53 KiB
[ebuild  N     ] dev-lua/luasocket-3.1.0::gentoo  USE="-doc" LUA_TARGETS="lua5-1 -lua5-3 -lua5-4 -luajit" 329 KiB
[ebuild  N     ] dev-lua/lpeg-1.1.0::gentoo  USE="-debug -doc -test" LUA_TARGETS="lua5-1 luajit -lua5-3 -lua5-4" 78 KiB
[ebuild  N     ] dev-lua/luajson-1.3.5::gentoo  LUA_TARGETS="lua5-1 -lua5-3 -lua5-4 -luajit" 50 KiB
[ebuild  N     ] media-libs/libquvi-scripts-0.9.20131130-r101::gentoo  USE="-offensive" LUA_SINGLE_TARGET="lua5-1 -lua5-4 -luajit" 315 KiB
[ebuild  N     ] net-libs/libproxy-0.5.12-r1::gentoo  USE="-duktape -gnome -gtk-doc -introspection -test -vala" 60 KiB
[ebuild  N     ] media-libs/libquvi-0.9.4-r100:0/8::gentoo  USE="nls -examples -static-libs" LUA_SINGLE_TARGET="lua5-1" 365 KiB

Total: 10 packages (9 new, 1 in new slot), Size of downloads: 2731 KiB