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

Calculating dependencies ... done!
Dependency resolution took 1.54 s (backtrack: 0/20).

[ebuild     U  ] app-vim/gentoo-syntax-17::gentoo [16::gentoo] USE="-ignore-glep31" 21 KiB

Total: 1 package (1 upgrade), Size of downloads: 21 KiB