1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/compilers/lunarml/default.nix b/nixpkgs/pkgs/development/compilers/lunarml/default.nix
index 558a4e435a41..d47801181701 100644
--- a/nixpkgs/pkgs/development/compilers/lunarml/default.nix
+++ b/nixpkgs/pkgs/development/compilers/lunarml/default.nix
@@ -49,6 +49,7 @@ stdenvNoCC.mkDerivation {
 
   meta = {
     description = "Standard ML compiler that produces Lua/JavaScript";
+    mainProgram = "lunarml";
     homepage = "https://github.com/minoki/LunarML";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ toastal ratsclub ];