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

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

[ebuild  N     ] media-libs/libdmtx-0.7.8::gentoo  777 KiB
[ebuild  N     ] media-gfx/imagemagick-7.1.2.32:0/7.1.2-18::gentoo  USE="X bzip2 cxx fontconfig jpeg jpeg2k openmp png tiff truetype zlib -corefonts -djvu -fftw -fpx -graphviz -hardened -hdri -heif -jbig -jpegxl -lcms -lqr -lzma -opencl -openexr -pango -perl -postscript -q8 -q32 -raw -static-libs -svg -test -verify-sig -webp -wmf -xml -zip" PERL_FEATURES="ithreads (-debug) -quadmath" 9939 KiB
[ebuild  N     ] media-gfx/dmtx-utils-0.7.6::gentoo  54 KiB

Total: 3 packages (3 new), Size of downloads: 10769 KiB