smplayer: refactor

- New rec-less, overlay-style overridable recursive attributes (in effect since
https://github.com/NixOS/nixpkgs/pull/119942);
- remove `with lib;`
- add `meta.changelog`
- "update" TODO

pkgs/applications/video/smplayer/default.nix

@@ -6,14 +6,14 @@
 , wrapQtAppsHook
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "smplayer";
   version = "23.6.0";
 
   src = fetchFromGitHub {
     owner = "smplayer-dev";
-    repo = pname;
-    rev = "v${version}";
+    repo = "smplayer";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-xGy6/9aUftBTSo9HJ3zyuRSagqimP9XvXKP/4oBQTo4=";
   };
 
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     "PREFIX=${placeholder "out"}"
   ];
 
-  meta = with lib; {
+  meta = {
     homepage = "https://www.smplayer.info";
     description = "A complete front-end for MPlayer";
     longDescription = ''
@@ -53,9 +53,10 @@ stdenv.mkDerivation rec {
       options of MPlayer, SMPlayer adds other interesting features like the
       possibility to play Youtube videos or download subtitles.
     '';
-    license = licenses.gpl3Plus;
-    maintainers = with maintainers; [ AndersonTorres ];
-    platforms = platforms.linux;
+    changelog = "https://github.com/smplayer-dev/smplayer/releases/tag/v${finalAttrs.version}";
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [ AndersonTorres ];
+    platforms = lib.platforms.linux;
   };
-}
-# TODO [ AndersonTorres ]: some form of wrapping mplayer/mpv around it
+})
+# TODO [ AndersonTorres ]: create a wrapper including mplayer/mpv