checkip: add changelog to meta

pkgs/tools/networking/checkip/default.nix

···
   src = fetchFromGitHub {
     owner = "jreisinger";
     repo = pname;
-    rev = "v${version}";
-    sha256 = "sha256-U0jHwKmGHpaHSiOYDeYCXiufw0JjzAmhBnINmFsqOJo=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-U0jHwKmGHpaHSiOYDeYCXiufw0JjzAmhBnINmFsqOJo=";
   };
 
   vendorHash = "sha256-9/z1mtZGqrvcvq8cWBpYN7kaPHaPqtyMwMNxuRRP4Cs=";
+
+  ldflags = [
+    "-w"
+    "-s"
+  ];
 
   # Requires network
   doCheck = false;
···
   meta = with lib; {
     description = "CLI tool that checks an IP address using various public services";
     homepage = "https://github.com/jreisinger/checkip";
+    changelog = "https://github.com/jreisinger/checkip/releases/tag/v${version}";
     license = licenses.asl20;
     maintainers = with maintainers; [ fab ];
   };