case PKG_EVENT_REQUIRED:
pkg = ev->e_required.pkg;
pkg_get(pkg, PKG_NAME, &name, PKG_VERSION, &version);
fprintf(stderr, "%s-%s is required by:", name, version);
fprintf(stderr, "\n%s-%s is required by:", name, version);
while (pkg_rdeps(pkg, &dep) == EPKG_OK)
fprintf(stderr, " %s-%s", pkg_dep_name(dep),
pkg_dep_version(dep));