1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/commonmark/default.nix b/nixpkgs/pkgs/development/python-modules/commonmark/default.nix
index bf6d74ea5f61..a6cf342ba04e 100644
--- a/nixpkgs/pkgs/development/python-modules/commonmark/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/commonmark/default.nix
@@ -22,6 +22,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Python parser for the CommonMark Markdown spec";
+    mainProgram = "cmark";
     homepage = "https://github.com/rolandshoemaker/CommonMark-py";
     license = licenses.bsd3;
   };