atlauncher: fix icon

pkgs/games/atlauncher/default.nix

@@ -9,6 +9,11 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-gHUYZaxADchikoCmAfqFjVbMYhhiwg2BZKctmww1Mlw=";
   };
 
+  env.ICON = fetchurl {
+    url = "https://atlauncher.com/assets/images/logo.svg";
+    hash = "sha256-XoqpsgLmkpa2SdjZvPkgg6BUJulIBIeu6mBsJJCixfo=";
+  };
+
   dontUnpack = true;
 
   buildInputs = [ ];
@@ -30,6 +35,10 @@ stdenv.mkDerivation (finalAttrs: {
         --suffix LD_LIBRARY_PATH : "${lib.makeLibraryPath finalAttrs.buildInputs}" ${
             lib.strings.optionalString withSteamRun ''--run "${steamrun} \\"''
           }
+
+      mkdir -p $out/share/icons/hicolor/scalable/apps
+      cp $ICON $out/share/icons/hicolor/scalable/apps/${finalAttrs.pname}.svg
+
       runHook postInstall
     '';
 
@@ -37,10 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     (makeDesktopItem {
       name = finalAttrs.pname;
       exec = "${finalAttrs.pname} --no-launcher-update true";
-      icon = fetchurl {
-        url = "https://avatars.githubusercontent.com/u/7068667";
-        hash = "sha256-YmEkxf4rZxN3jhiib0UtdUDDcn9lw7IMbiEucBL7b9o=";
-      };
+      icon = finalAttrs.pname;
       desktopName = "ATLauncher";
       categories = [ "Game" ];
     })