{xapian,xapian-omega,python3Packages.xapian}: 1.4.27 -> 1.4.31

https://lists.xapian.org/pipermail/xapian-discuss/2025-April/010075.html
https://lists.xapian.org/pipermail/xapian-discuss/2025-April/010076.html
https://lists.xapian.org/pipermail/xapian-discuss/2025-November/010103.html
https://lists.xapian.org/pipermail/xapian-discuss/2026-February/010106.html

pkgs/development/libraries/xapian/default.nix

@@ -76,5 +76,5 @@ in
   # Don't forget to change the hashes in xapian-omega and
   # python3Packages.xapian. They inherit the version from this package, and
   # should always be built with the equivalent xapian version.
-  xapian_1_4 = generic "1.4.27" "sha256-vLyZz78WCAEZwlcfwpZ5T1Ob1ULKOSbxfCmZYAgwq2E=";
+  xapian_1_4 = generic "1.4.31" "sha256-/s9gnqLv3IpkvjaXFarHMzNqEfdICmVFJElkrmvICBE=";
 }

pkgs/development/libraries/xapian/tools/omega/default.nix

@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "https://oligarchy.co.uk/xapian/${version}/xapian-omega-${version}.tar.xz";
-    hash = "sha256-HRk7MoXsFQVXJXsEnuHYyUxAvN6QbOC6fxo4oamlpcE=";
+    hash = "sha256-p9+2CN2LPqU93oUjbUdXloJgacTRJhieozp5M0myMXo=";
   };
 
   buildInputs = [

pkgs/development/python-modules/xapian/default.nix

@@ -17,7 +17,7 @@ buildPythonPackage rec {
 
   src = fetchurl {
     url = "https://oligarchy.co.uk/xapian/${version}/xapian-bindings-${version}.tar.xz";
-    hash = "sha256-ujteEICeV5rNEb0WV3nOP9KaiQTqN5aO9bV62Xw2GLo=";
+    hash = "sha256-o4zHukGIzAvSfcc2nwOQZ3IEcIehxU8bkzVdXpEDwwQ=";
   };
 
   configureFlags = [