ydict: add mpg123 to PATH

pkgs/applications/misc/ydict/default.nix

···
-{ lib, fetchFromGitHub, buildGoModule }:
+{ lib
+, fetchFromGitHub
+, buildGoModule
+, makeWrapper
+, mpg123
+}:
 
 buildGoModule rec {
   pname = "ydict";
···
 
   vendorSha256 = "sha256-c5nQVQd4n978kFAAKcx5mX2Jz16ZOhS8iL/oxS1o5xs=";
 
-  ldflags = [ "-s" "-w" "-X=main.Version=${version}" ];
+  ldflags = [
+    "-s"
+    "-w"
+    "-X=main.Version=${version}"
+  ];
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  preFixup = ''
+    wrapProgram $out/bin/${pname} \
+      --prefix PATH ":" "${lib.makeBinPath [ mpg123 ]}";
+  '';
 
   # has no tests
   doCheck = false;
 
   meta = with lib; {
-    description = "A command-line Chinese dictionary";
+    description = "Yet another command-line Youdao Chinese dictionary";
     homepage = "https://github.com/TimothyYe/ydict";
     license = licenses.mit;
-    platforms = platforms.linux;
     maintainers = with maintainers; [ zendo ];
   };
 }