libsciter: add aarch64-linux support (#456292)

pkgs/by-name/li/libsciter/package.nix

@@ -10,13 +10,28 @@
   autoPatchelfHook,
 }:
 
+let
+  inherit (stdenv.targetPlatform) system;
+
+  src.x86_64-linux = {
+    urlPath = "x64";
+    sha256 = "a1682fbf55e004f1862d6ace31b5220121d20906bdbf308d0a9237b451e4db86";
+  };
+
+  src.aarch64-linux = {
+    urlPath = "arm64";
+    sha256 = "sha256-bqGPbvtOM8/A6acDbFJGGf4kzKo/4S/bWcH/XvxVySU=";
+  };
+
+in
+
 stdenv.mkDerivation {
   pname = "libsciter";
   version = "4.4.8.23-bis"; # Version specified in GitHub commit title
 
   src = fetchurl {
-    url = "https://github.com/c-smile/sciter-sdk/raw/9f1724a45f5a53c4d513b02ed01cdbdab08fa0e5/bin.lnx/x64/libsciter-gtk.so";
-    sha256 = "a1682fbf55e004f1862d6ace31b5220121d20906bdbf308d0a9237b451e4db86";
+    url = "https://github.com/c-smile/sciter-sdk/raw/524a90ef7eab16575df9496f7e4c374bbd5fb1fe/bin.lnx/${src.${system}.urlPath}/libsciter-gtk.so";
+    inherit (src.${system}) sha256;
   };
 
   nativeBuildInputs = [
@@ -44,7 +59,10 @@ stdenv.mkDerivation {
   meta = with lib; {
     homepage = "https://sciter.com";
     description = "Embeddable HTML/CSS/JavaScript engine for modern UI development";
-    platforms = [ "x86_64-linux" ];
+    platforms = [
+      "x86_64-linux"
+      "aarch64-linux"
+    ];
     maintainers = with maintainers; [ leixb ];
     sourceProvenance = with sourceTypes; [ binaryNativeCode ];
     license = licenses.unfree;