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

Calculating dependencies ... done!
Dependency resolution took 1.88 s (backtrack: 0/20).

[ebuild  N     ] dev-util/byacc-20260126::gentoo  USE="-verify-sig" 893 KiB
[ebuild  N     ] dev-libs/libf2c-20240130::gentoo  USE="-static-libs" 128 KiB
[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] sci-libs/openblas-0.3.34::gentoo  USE="openmp -cpudetection -index64 -pthread -relapack -test" 24734 KiB
[ebuild  N     ] x11-libs/libXcursor-1.2.3::gentoo  USE="-doc" 286 KiB
[ebuild  N     ] dev-libs/maloc-1.5-r1::gentoo  USE="-doc -mpi" 776 KiB
[ebuild  N     ] sci-libs/gamer-1.5-r2::gentoo  USE="-doc" 4133 KiB
[ebuild  N     ] x11-misc/xbitmaps-1.1.4::gentoo  112 KiB
[ebuild  N     ] x11-libs/motif-2.5.2-r3:0/5::gentoo  USE="jpeg png unicode xcursor xrender -examples -static-libs -test -xft" 8573 KiB
[ebuild  N     ] x11-libs/libGLw-8.0.0-r2::gentoo  USE="motif" 216 KiB
[ebuild  N     ] media-libs/sg-1.5::gentoo  USE="-doc" 2793 KiB
[ebuild  N     ] sci-libs/lapack-3.12.1-r2::gentoo  USE="deprecated flexiblas lapacke -doc -eselect-ldso -index64 -test" 7879 KiB
[ebuild  N     ] sci-libs/flexiblas-3.5.0::gentoo  USE="openblas openmp system-blas -blis -index64 -mkl -tbb -test" 80741 KiB
[ebuild  N     ] sci-libs/blas-lapack-aux-wrapper-6::gentoo  USE="-index64 -test" 10 KiB
[ebuild  N     ] virtual/blas-3.8-r1::gentoo  USE="flexiblas -eselect-ldso -index64" 0 KiB
[ebuild  N     ] virtual/lapack-3.10-r1::gentoo  USE="flexiblas -eselect-ldso -index64" 0 KiB
[ebuild  N     ] sci-libs/suitesparseconfig-7.12.2-r2:0/7::gentoo  USE="openmp -cuda" 93104 KiB
[ebuild  N     ] sci-libs/superlu-4.3-r4::gentoo  USE="-doc -examples -test" 2809 KiB
[ebuild  N     ] sci-libs/cgcode-1.0-r2::gentoo  77 KiB
[ebuild  N     ] sci-libs/arpack-3.9.1::gentoo  USE="-examples -mpi" 997 KiB
[ebuild  N     ] sci-libs/amd-3.3.4-r1:0/3::gentoo  USE="-doc -fortran -test" 0 KiB
[ebuild  N     ] sci-libs/colamd-3.3.5-r1:0/3::gentoo  USE="-test" 0 KiB
[ebuild  N     ] sci-libs/camd-3.3.5-r1:0/3::gentoo  USE="-doc -test" 0 KiB
[ebuild  N     ] sci-libs/ccolamd-3.3.5-r1:0/3::gentoo  USE="-test" 0 KiB
[ebuild  N     ] sci-libs/cholmod-5.3.4-r2:0/5::gentoo  USE="cholesky matrixops modify openmp partition supernodal -cuda -doc -test" 0 KiB
[ebuild  N     ] sci-libs/umfpack-6.3.7-r1:0/6::gentoo  USE="openmp -doc -test" 0 KiB
[ebuild  N     ] sci-libs/punc-1.5-r1::gentoo  USE="-debug -doc -mpi" 6872 KiB
[ebuild  N     ] sci-libs/mc-1.5-r1::gentoo  USE="-debug -doc" 17716 KiB
[ebuild  N     ] sci-libs/fetk-1.5::gentoo  0 KiB

Total: 29 packages (29 new), Size of downloads: 252840 KiB

WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict:

sci-libs/superlu:0

  (sci-libs/superlu-7.0.1:0/7::gentoo, ebuild scheduled for merge) USE="-doc -examples -test" conflicts with
    <sci-libs/superlu-5 required by (sci-libs/mc-1.5-r1:0/0::gentoo, ebuild scheduled for merge) USE="-debug -doc"
    ^                 ^