Hello ! For some time, I've been building custom minified versions of Babylon.js, by directly running BuildOurOwnBabylonJS.bat on Wine/Linux. However, it recently (I can't be more precise) stopped working, as the produced file seems invalid (even with a fresh-cloned git repository). It may be a bug on Wine's side, or mine, in which case I'm deeply sorry for the unneeded noise.