v2: support Xapian + SQLite indexing

This is too slow, currently.  Working with only 2017 LKML
archives:

         git-only: ~1 minute
     git + SQLite: ~12 minutes
git+Xapian+SQlite: ~45 minutes

So yes, it looks like we'll need to parallelize Xapian indexing,
at least.

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 2ec2be69..e7856e3c 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -79,7 +79,9 @@ sub new {
 sub git {
         my ($self) = @_;
         $self->{git} ||= eval {
-                my $g = PublicInbox::Git->new($self->{mainrepo});
+                my $git_dir = $self->{mainrepo};
+                $git_dir .= '/all.git' if (($self->{version} || 1) == 2);
+                my $g = PublicInbox::Git->new($git_dir);
                 $g->{-httpbackend_limiter} = $self->{-httpbackend_limiter};
                 _cleanup_later($self);
                 $g;