diff --git a/hosts/skydick/datapool.nix b/hosts/skydick/datapool.nix
index 10b9699..70880a9 100644
--- a/hosts/skydick/datapool.nix
+++ b/hosts/skydick/datapool.nix
@@ -177,17 +177,25 @@
 
 {
   # Build sambaFull with Spotlight/tracker support.
-  # Upstream waf only checks tracker-sparql-{2.0,1.0,0.16,0.14}; tinysparql
-  # ships tracker-sparql-3.0.pc. Patch the version list and add build deps.
+  # Fixes: (1) upstream waf only checks tracker-sparql-{2.0..0.14} but
+  #   tinysparql ships 3.0.pc — patch version list.
+  # (2) tevent_glib_tracker uses PyEval_InitThreads removed in Python 3.13 —
+  #   suppress the deprecation error.
+  # (3) add icu for Unicode normalisation required by Spotlight.
   nixpkgs.overlays = [
     (final: prev: {
       sambaFull = prev.sambaFull.overrideAttrs (old: {
-        buildInputs = old.buildInputs ++ [ final.tinysparql.dev final.glib.dev ];
+        buildInputs = old.buildInputs ++ [
+          final.tinysparql.dev
+          final.glib.dev
+          final.icu.dev
+        ];
         postPatch = (old.postPatch or "") + ''
           substituteInPlace source3/wscript \
             --replace-fail "tracker_versions = ['2.0', '1.0', '0.16', '0.14']" \
                            "tracker_versions = ['3.0', '2.0', '1.0', '0.16', '0.14']"
         '';
+        NIX_CFLAGS_COMPILE = (old.NIX_CFLAGS_COMPILE or "") + " -Wno-error=deprecated-declarations";
       });
     })
   ];