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

Calculating dependencies ... done!
Dependency resolution took 1.34 s (backtrack: 0/20).

[ebuild  N     ] app-text/dos2unix-7.5.7::gentoo  USE="nls -debug -test -verify-sig" 977 KiB
[ebuild  N     ] acct-group/postgres-0-r3::gentoo  0 KiB
[ebuild  N     ] app-eselect/eselect-postgresql-2.4-r1::gentoo  5 KiB
[ebuild  N     ] app-arch/lz4-1.10.0-r1:0/1.10.0-meson::gentoo  USE="-static-libs -test" 379 KiB
[ebuild  N     ] sys-process/numactl-2.0.19::gentoo  USE="-static-libs" 441 KiB
[ebuild  N     ] sys-libs/liburing-2.15:0/2::gentoo  USE="-examples -static-libs -test" 538 KiB
[ebuild  N     ] app-text/docbook-sgml-dtd-4.5-r2:4.5::gentoo  70 KiB
[ebuild  N     ] app-text/docbook-sgml-dtd-3.0-r5:3.0::gentoo  43 KiB
[ebuild  N     ] acct-user/postgres-0-r3::gentoo  0 KiB
[ebuild  N     ] app-text/docbook-dsssl-stylesheets-1.79-r4::gentoo  272 KiB
[ebuild  N     ] dev-db/postgresql-18.6:18::gentoo  USE="icu lz4 nls numa pam python readline server ssl uring zlib zstd -debug -doc -kerberos -ldap -llvm -oauth -perl (-selinux) -static-libs (-systemd) -tcl -uuid -xml" LLVM_SLOT="22 -17 -18 -19 -20 -21 -23" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13" 22102 KiB
[ebuild  N     ] dev-lang/ghc-9.8.4-r1:0/9.8.4::gentoo  USE="gmp (-big-endian) -doc -elfutils -ghcbootstrap -ghcmakebinary -llvm -numa -profile -test -unregisterised -verify-sig" LLVM_SLOT="20 -17 -18 -19" 238903 KiB
[ebuild  N     ] app-admin/haskell-updater-1.5.0.0::gentoo  45 KiB
[ebuild  N     ] dev-haskell/parsec-3.1.17.0:0/3.1.17.0::gentoo  USE="-doc -hscolour -profile" 38 KiB
[ebuild  N     ] dev-haskell/text-2.1.1:0/2.1.1::gentoo  USE="simdutf -doc -hscolour -profile" 294 KiB
[ebuild  N     ] dev-haskell/cabal-syntax-3.10.3.0:0/3.10.3.0::gentoo  USE="-doc -hscolour -profile" 228 KiB
[ebuild  N     ] dev-haskell/cabal-3.10.3.0:0/3.10.3.0::gentoo  USE="-doc -hscolour -profile" 389 KiB
[ebuild  N     ] dev-haskell/utf8-string-1.0.2:0/1.0.2::gentoo  USE="-doc -hscolour -profile -test" 11 KiB
[ebuild  N     ] dev-haskell/old-locale-1.0.0.7:0/1.0.0.7::gentoo  USE="-doc -hscolour -profile" 4 KiB
[ebuild  N     ] dev-haskell/old-time-1.1.0.4:0/1.1.0.4::gentoo  USE="-doc -hscolour -profile" 74 KiB
[ebuild  N     ] dev-haskell/convertible-1.1.1.1:0/1.1.1.1::gentoo  USE="-doc -hscolour -profile -test" 14 KiB
[ebuild  N     ] dev-haskell/hdbc-2.4.0.4:0/2.4.0.4::gentoo  USE="-doc -hscolour -profile -test" 24 KiB
[ebuild  N     ] dev-haskell/hdbc-postgresql-2.5.0.1:0/2.5.0.1::gentoo  USE="-doc -hscolour -profile" 25 KiB

Total: 23 packages (23 new), Size of downloads: 264866 KiB