Foreword: I am not asking how to develop mods with mixins.

The problem:

I have been building a large modpack (approaching 400 mods and I haven't finished yet) for a past couple of weeks and (just as expected) I have finally run into some performance issues.

I am aware of the existence of spark and Observable, which are excellent tools, but these won't help here. I suspect one of the mods did something silly to one of the Entity (sub)classes and I intend to track it down. Binary chop is not a feasible option here. A single reproduction cycle can take a couple of hours - combine that with the tangled mess of dependencies between the mods and you get the perfect recipe for a huge headache.

What I am looking for is a command/tool capable of logging [modid]<->[modified class] pairs. Or at the very least print all involved modid's for a given classname.

I am fairly certain this information is already somewhere inside the running instance, I just don't know how to get it out. Can someone point me in the right direction? 😅

Welp, turns out what I was looking for was already there inside debug log 😆

The logs starting with [mixin/]: Mixing contain what I was looking for.

Not exactly the easiest way to grab the data I need, but nothing a bit of greping cannot fix