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

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

[ebuild  N     ] app-text/dos2unix-7.5.7::gentoo  USE="nls -debug -test -verify-sig" 977 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/cereal-0.5.8.3:0/0.5.8.3::gentoo  USE="-doc -hscolour -profile -test" 20 KiB
[ebuild  N     ] dev-haskell/tagged-0.8.10:0/0.8.10::gentoo  USE="template-haskell -doc -hscolour -profile" 11 KiB
[ebuild  N     ] dev-haskell/entropy-0.4.1.11:0/0.4.1.11::gentoo  USE="-doc -donotgetentropy -hscolour -profile" 9 KiB
[ebuild  N     ] dev-haskell/basement-0.0.16:0/0.0.16::gentoo  USE="-doc -hscolour -profile" 132 KiB
[ebuild  N     ] dev-haskell/base64-bytestring-1.2.1.0-r1:0/1.2.1.0::gentoo  USE="-doc -hscolour -profile -test" 16 KiB
[ebuild  N     ] dev-haskell/setenv-0.1.1.3:0/0.1.1.3::gentoo  USE="-doc -hscolour -profile" 3 KiB
[ebuild  N     ] dev-haskell/crypto-api-0.13.3:0/0.13.3::gentoo  USE="-all-cpolys -doc -hscolour -profile" 48 KiB
[ebuild  N     ] dev-haskell/memory-0.18.0-r1:0/0.18.0::gentoo  USE="-doc -hscolour -profile -test" 46 KiB
[ebuild  N     ] dev-haskell/crypton-1.0.5:0/1.0.5::gentoo  USE="integer-gmp target-attributes -check-alignment -doc -hscolour -old-toolchain-inliner -profile -test" CPU_FLAGS_X86="aes pclmul rdrand sse2" 636 KiB
[ebuild  N     ] dev-haskell/skein-1.0.9.4:0/1.0.9.4::gentoo  USE="(-big-endian) -doc -force-endianness -hscolour -profile -reference -test" 132 KiB
[ebuild  N     ] dev-haskell/clientsession-0.9.3.0:0/0.9.3.0::gentoo  USE="-doc -hscolour -profile -test" 8 KiB

Total: 18 packages (18 new), Size of downloads: 241928 KiB