How to add source to diagnostics in qflist and telescope?

Hey. I know that it is possible to always include the source of diagnostics both for the popup and for virtual text by setting source = 'always' in vim.diagnostic.config. However, I’ve not been able to figure out how to ensure that the source is always included when sending diagnostics to the loclist using vim.diagnostic.setloclist() or to telescope using telescope.builtin.diagnostics(). Any ideas? Thanks.