1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/physics/pythia/default.nix b/nixpkgs/pkgs/development/libraries/physics/pythia/default.nix
index 917dbf40a37d..a0daa91a1b54 100644
--- a/nixpkgs/pkgs/development/libraries/physics/pythia/default.nix
+++ b/nixpkgs/pkgs/development/libraries/physics/pythia/default.nix
@@ -26,6 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "A program for the generation of high-energy physics events";
+    mainProgram = "pythia8-config";
     license = licenses.gpl2Only;
     homepage = "https://pythia.org";
     platforms = platforms.unix;