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-rw-r--r--nixpkgs/pkgs/games/trackballs/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/games/trackballs/default.nix b/nixpkgs/pkgs/games/trackballs/default.nix
index 9ce9ad3ffc5e..3c3d50eafdb1 100644
--- a/nixpkgs/pkgs/games/trackballs/default.nix
+++ b/nixpkgs/pkgs/games/trackballs/default.nix
@@ -17,6 +17,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     homepage = "https://trackballs.github.io/";
     description = "3D Marble Madness clone";
+    mainProgram = "trackballs";
     platforms = platforms.linux;
     # Music is licensed under Ethymonics Free Music License.
     license = licenses.gpl2Plus;