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

Calculating dependencies ... done!
Dependency resolution took 1.20 s (backtrack: 0/20).

[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] dev-libs/maloc-1.5-r1::gentoo  USE="-doc -mpi" 776 KiB
[ebuild  N     ] dev-libs/libf2c-20240130::gentoo  USE="-static-libs" 128 KiB
[ebuild  N     ] sci-libs/openblas-0.3.34::gentoo  USE="openmp -cpudetection -index64 -pthread -relapack -test" 24734 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/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/superlu-7.0.1:0/7::gentoo  USE="-doc -examples -test" 2454 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

Total: 20 packages (20 new), Size of downloads: 217765 KiB