For testing with TEST_RUN_MODE=0 (which spawns new processes
instead of reusing them), we can't rely on packages being loaded
by subprocesses influencing the main Perl process. Thus we must
load PublicInbox::Config explicitly to prevent failures with
this run mode.
use PublicInbox::DS qw(now);
use PublicInbox::IO qw(write_file);
use PublicInbox::Eml;
+use PublicInbox::Config;
my $tmpdir = tmpdir;
local $ENV{HOME} = "$tmpdir";
local $ENV{PI_CONFIG} = "$tmpdir/.public-inbox/config";