Merge pull request #272942 from MartinNikov/patch-1

yarn-berry: Add `meta.mainProgram`

pkgs/development/tools/yarn-berry/default.nix

···
     license = licenses.bsd2;
     maintainers = with maintainers; [ ryota-ka thehedgeh0g ];
     platforms = platforms.unix;
+    mainProgram = "yarn";
   };
 }