WIP

flake.nix

@@ -107,20 +107,9 @@
       };
     });
 
-    overlays.sqlite-icu-ext = final: prev: let
-      overrideArgs = prev': {
-        configureFlags = prev'.configureFlags ++ [
-          "--with-icu-config=${lib.getExe' prev.icu.dev "icu-config"}"
-          "--enable-icu-collations"
-        ];
-
-        buildInputs = prev'.buildInputs ++ [
-          prev.icu
-        ];
-      };
-    in {
-      sqlite-icu-ext = prev.sqlite.overrideAttrs overrideArgs;
-      sqlite-interactive-icu-ext = prev.sqlite-interactive.overrideAttrs overrideArgs;
+    overlays.sqlite-icu-ext = final: prev: {
+      sqlite-icu-ext = prev.callPackage ./nix/sqlite.nix { };
+      sqlite-interactive-icu-ext = prev.callPackage ./nix/sqlite.nix { sqlite = prev.sqlite-interactive; };
     };
 
     packages = let
@@ -156,7 +145,9 @@
         ln -s ${src} $out
       '';
 
-      inherit (pkgs) sqlite-icu-ext sqlite-interactive-icu-ext;
+      sqlite = pkgs.callPackage ./nix/sqlite.nix { };
+
+      fts5-icu-tokenizer = pkgs.callPackage ./nix/fts5-icu-tokenizer/package.nix { };
 
       jmdict = pkgs.callPackage ./nix/jmdict.nix {
         inherit jmdict-src jmdict-with-examples-src edrdgMetadata;

nix/fts5-icu-tokenizer/0001-provide-sqlite-externally.patch

@@ -0,0 +1,20 @@
+diff --git i/CMakeLists.txt w/CMakeLists.txt
+index 9d99543..11ce4a4 100644
+--- i/CMakeLists.txt
++++ w/CMakeLists.txt
+@@ -131,6 +131,15 @@ if(NOT SQLite3_FOUND)
+   endif()
+ endif()
+ 
++if(SQLite3_FOUND AND NOT TARGET SQLite3::SQLite3)
++  add_library(SQLite3::SQLite3 UNKNOWN IMPORTED)
++
++  set_target_properties(SQLite3::SQLite3 PROPERTIES
++    IMPORTED_LOCATION "${SQLite3_LIBRARIES}"
++    INTERFACE_INCLUDE_DIRECTORIES "${SQLite3_INCLUDE_DIRS}"
++  )
++endif()
++
+ # --- Configure the Library ---
+ 
+ # Select source files based on API version

nix/fts5-icu-tokenizer/package.nix

@@ -0,0 +1,40 @@
+{
+  lib,
+  stdenv,
+  fetchFromSourcehut,
+  cmake,
+  pkg-config,
+  icu,
+  sqlite,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "fts5-icu-tokenizer";
+  version = "5.5";
+  src = fetchFromSourcehut {
+    vc = "hg";
+    owner = "~cwt";
+    repo = "fts5-icu-tokenizer";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-7Klsu9d1sY+W0buo6kwYdCyDA/u2dBTgu6WuttomTBo=";
+  };
+
+  patches = [
+    ./0001-provide-sqlite-externally.patch
+  ];
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+  ];
+
+  buildInputs = [
+    icu
+    sqlite
+  ];
+
+  cmakeFlags = [
+    (lib.cmakeFeature "LOCALE" "ja")
+    (lib.cmakeFeature "API_VERSION" "v2")
+  ];
+})

nix/sqlite.nix

@@ -0,0 +1,17 @@
+{
+  lib,
+  sqlite,
+  libiconv,
+  icu,
+}:
+
+sqlite.overrideAttrs (oldAttrs: {
+  name = "sqlite-icu-ext";
+
+  buildInputs = oldAttrs.buildInputs ++ [ icu ];
+
+  configureFlags = oldAttrs.configureFlags ++ [
+    "--with-icu-config=${lib.getExe' icu.dev "icu-config"}"
+    "--enable-icu-collations"
+  ];
+})