jackett: build selectively for aarch64

The previous derivation would use the upstream x86_64 binary on ARM64,
causing binary format compatibility issues at runtime.

pkgs/servers/jackett/default.nix

@@ -4,10 +4,16 @@ stdenv.mkDerivation rec {
   pname = "jackett";
   version = "0.14.365";
 
-  src = fetchurl {
-    url = "https://github.com/Jackett/Jackett/releases/download/v${version}/Jackett.Binaries.LinuxAMDx64.tar.gz";
-    sha256 = "0xvlknjhc75km12d8li50ifqpfyl6whymb6gd7ccwyd9lv9xxm27";
-  };
+  src = {
+    x86_64-linux = fetchurl {
+      url = "https://github.com/Jackett/Jackett/releases/download/v${version}/Jackett.Binaries.LinuxAMDx64.tar.gz";
+      sha512 = "28dgaap4aj1ldcfr0lzgz2aq1lbk8vlgbmjwfg4m4s4rlmiadw6wkxy9w7h4fq7gqbj51q8xxqz6y50jfzn124bs9wgi8br4lk3hsw3";
+    };
+    aarch64-linux = fetchurl {
+      url = "https://github.com/Jackett/Jackett/releases/download/v${version}/Jackett.Binaries.LinuxARM64.tar.gz";
+      sha512 = "0kv95yg775lq7lgc4b75rdqfsyzfcj2a1bj0cmhzpjk4sbsg3jayqgjzbhl5h79r9si1y8b7lg8ffl2j83rwap8wyq1dqdjls4savfb";
+    };
+  }."${stdenv.targetPlatform.system}" or (throw "Missing hash for host system: ${stdenv.targetPlatform.system}");
 
   buildInputs = [ makeWrapper ];
 
@@ -35,6 +41,6 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/Jackett/Jackett/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ edwtjo nyanloutre ];
-    platforms = platforms.linux;
+    platforms = [ "x86_64-linux" "aarch64-linux" ];
   };
 }