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

Calculating dependencies ... done!
Dependency resolution took 1.25 s (backtrack: 0/20).

[ebuild  N     ] dev-build/b2-5.5.3::gentoo  USE="-examples" 1198 KiB
[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] sci-libs/bliss-0.77-r1:0/1::gentoo  USE="gmp" 116 KiB
[ebuild  N     ] sci-libs/cddlib-094n::gentoo  USE="-doc -examples -static-libs -tools" 1349 KiB
[ebuild  N     ] dev-perl/XML-Writer-0.900.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 30 KiB
[ebuild  N     ] dev-libs/boost-1.91.0-r2:0/1.91.0::gentoo  USE="bzip2 context nls python stacktrace zlib -debug -doc -icu -lzma -mpi -numpy -test -test-full -tools -zstd" PYTHON_TARGETS="python3_14 -python3_12 -python3_13" 199785 KiB
[ebuild  N     ] dev-perl/common-sense-3.750.0::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 14 KiB
[ebuild  N     ] dev-perl/Term-ReadLine-Gnu-1.470.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 213 KiB
[ebuild  N     ] dev-perl/XML-SAX-Base-1.90.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 28 KiB
[ebuild  N     ] dev-perl/XML-NamespaceSupport-1.120.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 18 KiB
[ebuild  N     ] dev-perl/Canary-Stability-2013.0.0::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 5 KiB
[ebuild  N     ] sci-libs/openblas-0.3.34::gentoo  USE="openmp -cpudetection -index64 -pthread -relapack -test" 24734 KiB
[ebuild  N     ] sci-mathematics/normaliz-3.11.0:0/3::gentoo  USE="openmp -doc -extras -nauty" 6816 KiB
[ebuild  N     ] dev-perl/XML-SAX-1.20.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 47 KiB
[ebuild  N     ] dev-perl/Types-Serialiser-1.10.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 7 KiB
[ebuild  N     ] dev-perl/JSON-XS-4.40.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 86 KiB
[ebuild  N     ] dev-perl/JSON-4.100.0::gentoo  USE="xs -examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 93 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/cblas-3.8-r1::gentoo  USE="flexiblas -eselect-ldso -index64" 0 KiB
[ebuild  N     ] sci-mathematics/flint-3.5.0:0/23::gentoo  USE="-doc -ntl -test" 6226 KiB
[ebuild  N     ] sci-mathematics/polymake-4.15::gentoo  USE="bliss cdd flint normaliz -libpolymake -lrs -nauty -ppl -singular" 7167 KiB

Total: 23 packages (23 new), Size of downloads: 336549 KiB