ghcWithPackages: don't wrap GHC with LLVM unnecessarily

Since GHC now will have LLVM available when needed, we don't need to add
it in the wrapper anymore. It can still be added if NCG is available,
but -fllvm should be used (e. g. to work around an NCG bug).

pkgs/development/haskell-modules/with-packages-wrapper.nix

@@ -1,14 +1,8 @@
 { lib, stdenv, ghc, llvmPackages, packages, symlinkJoin, makeWrapper
-# Include LLVM by default if GHC doesn't have native code generation support
-# See https://gitlab.haskell.org/ghc/ghc/-/wikis/platforms
-, useLLVM ? !(lib.any lib.id ([
-    stdenv.targetPlatform.isx86
-    stdenv.targetPlatform.isPowerPC
-    stdenv.targetPlatform.isSparc
-  ] ++ lib.optionals (lib.versionAtLeast ghc.version "9.2") [
-    (stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin)
-    # TODO(@sternenseemann): Is armv7a supported for iOS?
-  ]))
+# GHC will have LLVM available if necessary for the respective target,
+# so useLLVM only needs to be changed if -fllvm is to be used for a
+# platform that has NCG support
+, useLLVM ? false
 , postBuild ? ""
 , ghcLibdir ? null # only used by ghcjs, when resolving plugins
 }: