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

Calculating dependencies ... done!
Dependency resolution took 1.12 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/text-1.2.5.0-r1:0/1.2.5.0::gentoo  USE="-doc -hscolour -profile" 153 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/mtl-2.3.1-r1:0/2.3.1::gentoo  USE="-doc -hscolour -profile" 26 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/prettyprinter-1.7.1:0/1.7.1::gentoo  USE="text -buildreadme -doc -hscolour -profile (-test)" 56 KiB
[ebuild  N     ] dev-haskell/colour-2.3.6:0/2.3.6::gentoo  USE="-doc -hscolour -profile (-test)" 21 KiB
[ebuild  N     ] dev-haskell/transformers-compat-0.7.2:0/0.7.2::gentoo  USE="-doc -hscolour -profile" 46 KiB
[ebuild  N     ] dev-haskell/blaze-builder-0.4.2.3:0/0.4.2.3::gentoo  USE="-doc -hscolour -profile -test" 60 KiB
[ebuild  N     ] dev-haskell/semigroups-0.20.1:0/0.20.1::gentoo  USE="-doc -hscolour -profile" 6 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/alex-3.5.1.0::gentoo  USE="-doc -static -test" 84 KiB
[ebuild  N     ] dev-haskell/happy-1.20.1.1::gentoo  USE="-doc -test" 180 KiB
[ebuild  N     ] dev-haskell/language-javascript-0.7.1.0:0/0.7.1.0::gentoo  USE="-doc -hscolour -profile -test" 75 KiB
[ebuild  N     ] dev-haskell/ansi-terminal-types-1.1.3:0/1.1.3::gentoo  USE="-doc -hscolour -profile" 9 KiB
[ebuild  N     ] dev-haskell/ansi-terminal-1.1.5:0/1.1.5::gentoo  USE="-doc -examples -hscolour -profile" 33 KiB
[ebuild  N     ] dev-haskell/prettyprinter-ansi-terminal-1.1.3:0/1.1.3::gentoo  USE="-doc -hscolour -profile (-test)" 9 KiB
[ebuild  N     ] dev-haskell/optparse-applicative-0.18.1.0-r1:0/0.18.1.0::gentoo  USE="-doc -hscolour -profile -test" 65 KiB
[ebuild  N     ] dev-haskell/hjsmin-0.2.0.4:0/0.2.0.4::gentoo  USE="-doc -hscolour -profile -test" 6 KiB

Total: 22 packages (22 new), Size of downloads: 241409 KiB