xcpdb: wire up new index options and --help

--sequential-shard also disables the copy parallelism (--jobs),
so it can be useful for systems unable to handle parallel random
I/O but still want many shards.

There was a missing "use strict", too, which is fixed.

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/PublicInbox/Xapcmd.pm b/lib/PublicInbox/Xapcmd.pm
index b6279218..46548a94 100644
--- a/lib/PublicInbox/Xapcmd.pm
+++ b/lib/PublicInbox/Xapcmd.pm
@@ -82,7 +82,8 @@ sub commit_changes ($$$$) {
                                 $im->{shards} = $n;
                         }
                 }
-
+                my $env = $opt->{-idx_env};
+                local %ENV = (%ENV, %$env) if $env;
                 PublicInbox::Admin::index_inbox($ibx, $im, $opt);
         }
 }