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

Calculating dependencies ... done!
Dependency resolution took 1.14 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/gumbo-0.14.1:0/4::gentoo  USE="-doc -test" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13" 2135 KiB
[ebuild  N     ] dev-lang/mujs-1.3.9:0/1.3.9::gentoo  2585 KiB
[ebuild  N     ] app-text/mupdf-1.28.2:0/1.28.2::gentoo  USE="X javascript jpeg2k opengl ssl -archive -barcode -brotli" 67284 KiB
[ebuild  N     ] app-text/fbpdf-0_p20250124::gentoo  USE="-djvu -poppler" 9 KiB

Total: 4 packages (4 new), Size of downloads: 72012 KiB