if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
warn <<_____ if scalar(@seed_sources) == 1;
if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
warn <<_____ if scalar(@seed_sources) == 1;