'trusted' => $allow_unsigned ? { true => 'yes', false => undef },
'allow-insecure' => $allow_insecure ? { true => 'yes', false => undef },
'signed-by' => $keyring,
'trusted' => $allow_unsigned ? { true => 'yes', false => undef },
'allow-insecure' => $allow_insecure ? { true => 'yes', false => undef },
'signed-by' => $keyring,