portage-ng / portage / dev-ml / opam / 2.1.6-r1
emerge -vp

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

Calculating dependencies ... done!
Dependency resolution took 1.83 s (backtrack: 0/20).

[ebuild  N     ] dev-lang/ocaml-5.5.1:0/5.5.1::gentoo  USE="ocamlopt -emacs -flambda -latex -test -xemacs" 6457 KiB
[ebuild  N     ] dev-ml/dune-3.23.1:0/3.23.1::gentoo  USE="-emacs -test" 3624 KiB
[ebuild  N     ] dev-ml/findlib-1.9.8-r1:0/1::gentoo  USE="ocamlopt -doc -tk" 269 KiB
[ebuild  N     ] dev-ml/ocamlbuild-0.16.1:0/0.16.1::gentoo  USE="ocamlopt" 198 KiB
[ebuild  N     ] dev-ml/result-1.5:0/1.5::gentoo  USE="ocamlopt" 3 KiB
[ebuild  N     ] dev-ml/re-1.14.0:0/1.14.0::gentoo  USE="ocamlopt -test" 109 KiB
[ebuild  N     ] dev-ml/menhir-20250912:0/20250912::gentoo  USE="ocamlopt" 1251 KiB
[ebuild  N     ] dev-ml/ocaml-base64-3.5.2:0/3.5.2::gentoo  USE="ocamlopt -test" 19 KiB
[ebuild  N     ] dev-ml/stdlib-shims-0.3.0::gentoo  USE="ocamlopt" 10 KiB
[ebuild  N     ] dev-ml/xml-light-2.5:0/2.5::gentoo  USE="ocamlopt" 18 KiB
[ebuild  N     ] dev-ml/cppo-1.8.0:0/1.8.0::gentoo  USE="ocamlopt" 43 KiB
[ebuild  N     ] dev-ml/opam-file-format-2.2.0-r1:0/2.2.0::gentoo  USE="ocamlopt -test" 32 KiB
[ebuild  N     ] dev-ml/csexp-1.5.2-r1:0/1.5.2::gentoo  USE="ocamlopt -test" 12 KiB
[ebuild  N     ] dev-ml/topkg-1.1.1:0/1.1.1::gentoo  USE="ocamlopt" 119 KiB
[ebuild  N     ] dev-ml/extlib-1.8.0:0/1.8.0::gentoo  USE="ocamlopt -doc" 89 KiB
[ebuild  N     ] dev-ml/dune-configurator-3.21.1:0/3.21.1::gentoo  USE="ocamlopt" 3352 KiB
[ebuild  N     ] dev-ml/cmdliner-1.3.0:0/1.3.0::gentoo  USE="ocamlopt" 58 KiB
[ebuild  N     ] dev-ml/parmap-1.2.5:0/1.2.5::gentoo  USE="ocamlopt" 48 KiB
[ebuild  N     ] dev-ml/ocaml-expat-1.3.0:0/1.3.0::gentoo  USE="ocamlopt -doc -test" 57 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  NS    ] app-text/docbook-xml-dtd-4.3-r2:4.3::gentoo [4.1.2-r7:4.1.2::gentoo, 4.2-r3:4.2::gentoo, 4.4-r3:4.4::gentoo, 4.5-r2:4.5::gentoo] 82 KiB
[ebuild  N     ] sys-apps/bubblewrap-0.13.0::gentoo  USE="-debug (-selinux) -test" 127 KiB
[ebuild  N     ] dev-ml/graphics-5.2.0-r1::gentoo  USE="ocamlopt" 65 KiB
[ebuild  N     ] dev-ml/ocamlgraph-2.2.0:0/2.2.0::gentoo  USE="ocamlopt" 311 KiB
[ebuild  N     ] dev-ml/cudf-0.10-r1:0/0.10::gentoo  USE="ocamlopt -llvm-libunwind -test" 47 KiB
[ebuild  N     ] dev-ml/dose3-7.0.0-r2:0/7.0.0::gentoo  USE="ocamlopt" 1350 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
[ebuild  N     ] dev-ml/opam-2.1.6-r1:0/2.1.6::gentoo  USE="ocamlopt" 818 KiB

Total: 37 packages (36 new, 1 in new slot), Size of downloads: 230057 KiB

Wall time
2.870 s vs. 0.486 s for portage-ng