make Plack optional for non-WWW and non-httpd users

Some users just want to run -mda, -watch, and/or -nntpd.
Let them run just those without forcing them to pull in a
bunch of dependencies.

1 files changed, 9 insertions, 6 deletions

diff --git a/script/public-inbox-httpd b/script/public-inbox-httpd
index b2464f4e..09da505e 100755
--- a/script/public-inbox-httpd
+++ b/script/public-inbox-httpd
@@ -1,15 +1,18 @@
 #!/usr/bin/perl -w
-# Copyright (C) 2016-2019 all contributors <meta@public-inbox.org>
+# Copyright (C) 2016-2020 all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 #
 # Standalone HTTP server for public-inbox.
 use strict;
-use warnings;
-use Plack::Util;
 use PublicInbox::Daemon;
-use PublicInbox::HTTP;
-use PublicInbox::HTTPD;
-use Plack::Builder;
+BEGIN {
+        for (qw(Plack::Builder Plack::Util)) {
+                eval("require $_") or die "E: Plack is required for $0\n";
+        }
+        Plack::Builder->import;
+        require PublicInbox::HTTP;
+        require PublicInbox::HTTPD;
+}
 my %httpds;
 my $app;
 my $refresh = sub {