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

Calculating dependencies ... done!
Dependency resolution took 6.38 s (backtrack: 6/20).

[ebuild  N     ] dev-perl/File-Which-1.270.0-r1::gentoo  USE="-pwhich -test" PERL_FEATURES="ithreads (-debug) -quadmath" 25 KiB
[ebuild  N     ] dev-perl/Shell-Guess-0.100.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 21 KiB
[ebuild  N     ] dev-perl/Sort-Versions-1.620.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 13 KiB
[ebuild  N     ] virtual/perl-Test-Simple-1.302.210::gentoo  0 KiB
[ebuild  N     ] virtual/perl-Archive-Tar-3.40.0::gentoo  0 KiB
[ebuild  N     ] dev-perl/File-chdir-0.101.100-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 25 KiB
[ebuild  N     ] sci-visualization/gnuplot-6.0.5::gentoo  USE="X cairo gd readline -amos (-aqua) -bitmap -doc -examples -gpic -latex -libcaca -libcerf -lua -metafont -metapost -qt6 -regis -tgif -wxwidgets" LUA_SINGLE_TARGET="lua5-1 -lua5-3 -lua5-4" 7400 KiB
[ebuild  N     ] dev-perl/Archive-Extract-0.880.0-r4::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 28 KiB
[ebuild  N     ] dev-perl/Shell-Config-Generate-0.340.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 29 KiB
[ebuild  N     ] dev-perl/Unicode-UTF8-0.620.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 86 KiB
[ebuild  N     ] dev-perl/FFI-CheckLib-0.310.0-r1::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 37 KiB
[ebuild  N     ] dev-perl/Path-Tiny-0.150.0::gentoo  USE="-minimal -test" PERL_FEATURES="ithreads (-debug) -quadmath" 104 KiB
[ebuild  N     ] dev-perl/Alien-Build-2.840.0-r1::gentoo  USE="-examples -minimal -test -zip" PERL_FEATURES="ithreads (-debug) -quadmath" 536 KiB
[ebuild  N     ] dev-perl/Alien-Base-ModuleBuild-1.170.0-r2::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 66 KiB
[ebuild  N     ] dev-perl/Alien-Gnuplot-1.43.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 10 KiB

Total: 15 packages (15 new), Size of downloads: 8375 KiB

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

dev-lang/perl:0

  (dev-lang/perl-5.44.0:0/5.44::gentoo, ebuild scheduled for merge) USE="gdbm -berkdb -doc -minimal" PERL_FEATURES="ithreads (-debug) -quadmath" conflicts with
    dev-lang/perl:0/5.42= required by (virtual/perl-Storable-3.370.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-MIME-Base64-3.160.100_rc-r2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Digest-MD5-2.590.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Compress-Raw-Zlib-2.213.0-r1:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-version-0.993.300:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-podlators-6.0.2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-MIME-Base64-3.160.100_rc-r2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Test-Harness-3.500.0-r1:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-ExtUtils-CBuilder-0.280.242-r2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Digest-MD5-2.590.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Text-ParseWords-3.310.0-r4:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-libnet-3.150.0-r2:0/0::gentoo, installed) USE="ssl"
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-version-0.993.300:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-podlators-6.0.2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Test-Harness-3.500.0-r1:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-File-Spec-3.940.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-libnet-3.150.0-r2:0/0::gentoo, installed) USE="ssl"
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-ExtUtils-CBuilder-0.280.242-r2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-XSLoader-0.320.0-r2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Carp-1.540.0-r2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Text-ParseWords-3.310.0-r4:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-File-Spec-3.940.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Compress-Raw-Bzip2-2.213.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Encode-3.210.0-r2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Exporter-5.790.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-ExtUtils-ParseXS-3.570.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-CPAN-Meta-2.150.10-r11:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-XSLoader-0.320.0-r2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-IO-1.550.0-r1:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Compress-Raw-Bzip2-2.213.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Module-Metadata-1.0.38-r1:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Exporter-5.790.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Encode-3.210.0-r2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Carp-1.540.0-r2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Scalar-List-Utils-1.680.100_rc:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Digest-SHA-6.40.0-r2:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-CPAN-Meta-2.150.10-r11:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-ExtUtils-ParseXS-3.570.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Module-Metadata-1.0.38-r1:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-IO-Compress-2.213.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-IO-1.550.0-r1:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Scalar-List-Utils-1.680.100_rc:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-ExtUtils-MakeMaker-7.760.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-Digest-SHA-6.40.0-r2:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-JSON-PP-4.160.0-r4:0/0::gentoo, ebuild scheduled for merge) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-IO-Compress-2.213.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-ExtUtils-MakeMaker-7.760.0:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-File-Path-2.180.0-r4:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Storable-3.370.0:0/0::gentoo, installed) USE=""
    ^              ^^^^^
    dev-lang/perl:0/5.42= required by (virtual/perl-File-Path-2.180.0-r4:0/0::gentoo, installed) USE=""
                 ^^^^^^^^
    =dev-lang/perl-5.42* required by (virtual/perl-Compress-Raw-Zlib-2.213.0-r1:0/0::gentoo, installed) USE=""
    ^              ^^^^^


!!! The following update(s) have been skipped due to unsatisfied dependencies
!!! triggered by backtracking:

virtual/perl-Test-Simple:0
virtual/perl-Archive-Tar:0
virtual/perl-Math-BigInt:0