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

Calculating dependencies ... done!
Dependency resolution took 1.22 s (backtrack: 0/20).

[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] dev-lang/ocaml-5.5.1:0/5.5.1::gentoo  USE="ocamlopt -emacs -flambda -latex -test -xemacs" 6457 KiB
[ebuild  N     ] sci-libs/openblas-0.3.34::gentoo  USE="openmp -cpudetection -index64 -pthread -relapack -test" 24734 KiB
[ebuild  N     ] dev-ml/findlib-1.9.8-r1:0/1::gentoo  USE="ocamlopt -doc -tk" 269 KiB
[ebuild  N     ] dev-ml/dune-3.23.1:0/3.23.1::gentoo  USE="-emacs -test" 3624 KiB
[ebuild  N     ] dev-ml/ocamlbuild-0.16.1:0/0.16.1::gentoo  USE="ocamlopt" 198 KiB
[ebuild  N     ] dev-ml/cppo-1.8.0:0/1.8.0::gentoo  USE="ocamlopt" 43 KiB
[ebuild  N     ] dev-ml/extlib-1.8.0:0/1.8.0::gentoo  USE="ocamlopt -doc" 89 KiB
[ebuild  N     ] dev-ml/cudf-0.10-r1:0/0.10::gentoo  USE="ocamlopt -llvm-libunwind -test" 47 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     ] sci-libs/suitesparseconfig-7.12.2-r2:0/7::gentoo  USE="openmp -cuda" 93104 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-mathematics/glpk-5.0-r5:0/40::gentoo  USE="-doc -examples -mysql" 4036 KiB
[ebuild  N     ] dev-ml/mccs-1.1.19:0/1.1.19::gentoo  USE="ocamlopt" 1002 KiB

Total: 18 packages (18 new), Size of downloads: 222225 KiB