X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=INSTALL;h=875014f01bcd1e201e3999a4d35b4ab4665fa91d;hp=40ea377af97d6b72325016044a8db37433671d3e;hb=HEAD;hpb=f981f5bae0e33219b7e0e9f2d5e03d54d0d88cce

diff --git a/INSTALL b/INSTALL
index 40ea377a..8054fafa 100644
--- a/INSTALL
+++ b/INSTALL
@@ -32,13 +32,6 @@ Talloc, and zlib which are each described below:
 
 	Xapian is available from https://xapian.org
 
-	Note: Notmuch will work best with Xapian 1.0.18 (or later) or
-	Xapian 1.1.4 (or later). Previous versions of Xapian (whether
-	1.0 or 1.1) had a performance bug that made notmuch very slow
-	when modifying tags. This would cause distracting pauses when
-	reading mail while notmuch would wait for Xapian when removing
-	the "inbox" and "unread" tags from messages in a thread.
-
 	GMime
 	-----
 	GMime provides decoding of MIME email messages for Notmuch.
@@ -48,6 +41,15 @@ Talloc, and zlib which are each described below:
 
 	GMime is available from https://github.com/jstedfast/gmime
 
+        Sfsexp
+        ------
+
+        sfsexp is the "small fast s-expression" library. Notmuch
+        optionally use it to provide a second query parser.
+
+        sfsexp is available from https://github.com/mjsottile/sfsexp.
+        In Debian Bookworm and later, install libsexp-dev.
+
 	Talloc
 	------
 	Talloc is a memory-pool allocator used by Notmuch.