637e7d8b51
The comment said "Some of the OpenJDK derivation set their `pos` by
hand" but this is no longer true since the OpenJDK deduplication into
generic.nix. Since OpenJDK no longer sets `pos`, mkDerivation's
fallback finds `meta.description` via `builtins.unsafeGetAttrPos` in
the `oldAttrs.meta // { ... }` merge, which already points to
mk-corretto.nix.