ghcWithPackages: more robust searching for dylib to link on macOS (#411741)

          # Boot libraries are located differently than other libraries since GHC 9.6, so handle them separately.

          if [[ -x "${bootLibDir}" ]]; then

            ln -s "${bootLibDir}"/*.dylib $dynamicLinksDir

            find "${bootLibDir}" -name '*.dylib' -exec ln -s {} "$dynamicLinksDir" \;

          fi

          for d in $(grep -Poz "dynamic-library-dirs:\s*\K .+\n" $packageConfDir/*|awk '{print $2}'|sort -u); do

            ln -s $d/*.dylib $dynamicLinksDir

            find "$d" -name '*.dylib' -exec ln -s {} "$dynamicLinksDir" \;

          done

          for f in $packageConfDir/*.conf; do

            # Initially, $f is a symlink to a read-only file in one of the inputs