1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/3to2/default.nix b/nixpkgs/pkgs/development/python-modules/3to2/default.nix
index 18e93a1ff77a..b86e16ae0d4d 100644
--- a/nixpkgs/pkgs/development/python-modules/3to2/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/3to2/default.nix
@@ -27,6 +27,7 @@ buildPythonPackage rec {
   meta = {
     homepage = "https://bitbucket.org/amentajo/lib3to2";
     description = "Refactors valid 3.x syntax into valid 2.x syntax, if a syntactical conversion is possible";
+    mainProgram = "3to2";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ mt-caret ];
   };