SPELL=llvm16
         VERSION=16.0.6
      PATCHLEVEL=1
         ARCHIVE=off
     GATHER_DOCS=off
      LICENSE[0]=BSD
        WEB_SITE="https://llvm.org"
         ENTERED=20231110
           SHORT="deprecated, superseded by llvm:16"
cat << EOF
Deprecated in favour of slot 16 of the llvm spell, which builds the same
llvm into the same /opt/llvm16.

Casting this dispels it and casts llvm:16 in its place.
EOF