firefox-extensions.kagi-search: init at 0.7.4

pkgs/firefox-extensions/kagi-search/package.nix

@@ -0,0 +1,43 @@
+{
+  fetchFromGitHub,
+  gitUpdater,
+  stdenv,
+  wrapFirefoxAddonsHook,
+  zip,
+}:
+stdenv.mkDerivation rec {
+  pname = "kagi-search";
+  version = "0.7.4";
+  src = fetchFromGitHub {
+    owner = "kagisearch";
+    repo = "browser_extensions";
+    rev = "release/${version}";
+    hash = "sha256-OaydcKtrMgxMJMPpl6e2YXhm1FyqJPPpAMObEU45J84=";
+  };
+
+  buildPhase = ''
+    # inline what `build.js` does
+    cp -R shared/* firefox
+    (cd firefox ; zip -r -FS ../firefox.xpi .)
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm644 firefox.xpi $out/$extid.xpi
+
+    runHook postInstall
+  '';
+
+  nativeBuildInputs = [
+    wrapFirefoxAddonsHook
+    zip
+  ];
+
+  extid = "search@kagi.com";
+  passthru.updateScript = gitUpdater { };
+
+  meta = {
+    description = "A simple helper extension for setting Kagi as a default search engine, and automatically logging in to Kagi in incognito browsing windows.";
+  };
+}