doc: technical/ds.txt: describe PublicInbox::DS divergences

Danga::Socket 1.62 was released a few months back and
the maintainer indicated it would be the last release.
We've diverged significantly in incompatible ways...

While most of this should've already been documented in
commit messages, putting it all into one document could
make it easier-to-digest.

It's also a strange design for anybody used to conventional
event loops.  Maybe this is an unconventional project :P

1 files changed, 8 insertions, 8 deletions

diff --git a/lib/PublicInbox/DS.pm b/lib/PublicInbox/DS.pm
index 09dc3992..058b1358 100644
--- a/lib/PublicInbox/DS.pm
+++ b/lib/PublicInbox/DS.pm
@@ -3,15 +3,15 @@
 #
 # This license differs from the rest of public-inbox
 #
-# This is a fork of the (for now) unmaintained Danga::Socket 1.61.
-# Unused features will be removed, and updates will be made to take
-# advantage of newer kernels.
+# This is a fork of the unmaintained Danga::Socket (1.61) with
+# significant changes.  See Documentation/technical/ds.txt in our
+# source for details.
 #
-# API changes to diverge from Danga::Socket will happen to better
-# accomodate new features and improve scalability.  Do not expect
-# this to be a stable API like Danga::Socket.
-# Bugs encountered (and likely fixed) are reported to
-# bug-Danga-Socket@rt.cpan.org and visible at:
+# Do not expect this to be a stable API like Danga::Socket,
+# but it will evolve to suite our needs and to take advantage of
+# newer Linux and *BSD features.
+# Bugs encountered were reported to bug-Danga-Socket@rt.cpan.org,
+# fixed in Danga::Socket 1.62 and visible at:
 # https://rt.cpan.org/Public/Dist/Display.html?Name=Danga-Socket
 package PublicInbox::DS;
 use strict;