mk-component-set: wrap gcc-ld/ld.lld instead of multicall rust-lld

Other flavor dispatchers may use different CLI (eg. MSVC 'link' style)
and our wrapper cannot handle all of them. They are usually used for
exotic targets like UEFI or WASM ones, where Nix libraries cannot be
used without manual configuration anyway.

mk-component-set.nix

@@ -124,18 +124,19 @@ let
  chmod +x "$dst"
  }
 
- dsts=( "$out"/lib/rustlib/*/bin/rust-lld )
+ dsts=( "$out"/lib/rustlib/*/bin/gcc-ld/ld.lld )
  if [[ ''${#dsts} -ne 0 ]]; then
- ls -lah $out
  mkdir -p $out/nix-support
  substituteAll ${path + "/pkgs/build-support/wrapper-common/utils.bash"} $out/nix-support/utils.bash
  substituteAll ${path + "/pkgs/build-support/bintools-wrapper/add-flags.sh"} $out/nix-support/add-flags.sh
  substituteAll ${path + "/pkgs/build-support/bintools-wrapper/add-hardening.sh"} $out/nix-support/add-hardening.sh
 
  for dst in "''${dsts[@]}"; do
- unwrapped="$(dirname "$dst")/.rust-lld-unwrapped"
+ # The ld.lld is path/name sensitive because itself is a wrapper. Keep its original name.
+ unwrapped="$(dirname "$dst")-unwrapped/ld.lld"
+ mkdir -p "$(dirname "$unwrapped")"
  mv "$dst" "$unwrapped"
- wrap "$dst" ${./ld-wrapper.sh} "$unwrapped"
+ wrap "$dst" ${path + "/pkgs/build-support/bintools-wrapper/ld-wrapper.sh"} "$unwrapped"
  done
  fi
  '';