1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/demesdraw/default.nix b/nixpkgs/pkgs/development/python-modules/demesdraw/default.nix
index 42e9fdc4c5f9..2672f8714685 100644
--- a/nixpkgs/pkgs/development/python-modules/demesdraw/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/demesdraw/default.nix
@@ -56,6 +56,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Drawing functions for Demes demographic models";
+    mainProgram = "demesdraw";
     homepage = "https://github.com/grahamgower/demesdraw";
     license = licenses.isc;
     maintainers = with maintainers; [ alxsimon ];