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

Calculating dependencies ... done!
Dependency resolution took 1.17 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/testing-type-modifiers-0.1.0.1:0/0.1.0.1::gentoo  USE="-doc -hscolour -profile" 3 KiB
[ebuild  N     ] dev-haskell/splitmix-0.1.3.2:0/0.1.3.2::gentoo  USE="-doc -hscolour -optimised-mixer -profile (-test)" 12 KiB
[ebuild  N     ] dev-haskell/dictionary-sharing-0.1.0.0-r1:0/0.1.0.0::gentoo  USE="-doc -hscolour -profile" 4 KiB
[ebuild  N     ] dev-haskell/size-based-0.1.3.3:0/0.1.3.3::gentoo  USE="-doc -hscolour -profile" 12 KiB
[ebuild  N     ] dev-haskell/random-1.2.1.3:0/1.2.1.3::gentoo  USE="-doc -hscolour -profile -test" 47 KiB
[ebuild  N     ] dev-haskell/quickcheck-2.15.0.1:0/2.15.0.1::gentoo  USE="template-haskell -doc -hscolour -profile -test" 89 KiB
[ebuild  N     ] dev-haskell/testing-feat-1.1.1.1:0/1.1.1.1::gentoo  USE="-doc -hscolour -profile" 16 KiB

Total: 14 packages (14 new), Size of downloads: 241050 KiB