Two nodes. One carries the values a person picked, as a single validated payload rather than a socket per setting -- a socket per setting means this node's shape changes whenever any module gains an option, and every saved workflow refers to sockets that moved. The other reads what announced itself, filters it by what the model actually is, orders it by declared relations, and installs each one through ComfyUI's own patcher_extension wrappers. The consequence is checked against comfy's real prepare_model_patcher and WrapperExecutor rather than against our own dict: a model that has been through this node runs every per-step modifier inside ComfyUI's own SamplerCustomAdvanced. The sampler is not consulted, so it cannot own them. Installing happens on a clone, and clone() copies the wrapper lists per key, so the model everyone else holds is untouched. Fifty runs leave zero wrappers behind. The accumulation that once degraded output across a hundred generations and survived every reset short of a restart is structurally impossible here rather than something to remember to undo. The payload is validated against the same declaration that renders the panel: an undeclared key, a wrong type, a value outside its own bounds and a bool passed as a number are all refused, and all problems are reported at once. v4 validated none of it, which is why it needed a hand-mirrored table of every default and a list of keys that no longer meant anything. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
ComfyUI-FunPack v5 — "Cunning Cranberry"
FunPack v4.0.0 is going to be the latest release of classic FunPack. Next update is another milestone update, or shall I say, a full rework.
Maintenance of current FunPack became a mess — forgetting to add or remove buttons from/to UI, finding functions that don't do anything but still present in the code absolutely randomly, trying to keep the UI neat while it has no strict boundaries on how it should look like, and of course — making it easy for users to understand how FunPack operates and how you can operate it — this is all time, money and token-consuming.
General idea behind the FunPack v5 rework is writing it from scratch, with a new architecture where a feature can't be forgotten, where a wire can't be missed, where one failing module never stops whole process from executing. Loaders and features would tell the UI by themselves what sorts of inputs they need and where to put it — and UI will compose them according to design guidelines it would have. Samplers would become independent from features — if a feature is available and enabled, sampler would call it. If it's not — it gets skipped and doesn't even appear in the UI so it won't confuse you.
Most of this comes from a FunUI backend draft that got shelved after understanding on how much time has to be invested into polishing it. Without a community support and wide usage it would become another dead project only one person in the world needs but no one else.
Come to think of it, FunPack already became something alike, with an exception — this project is more than alive, and while I can, I will support it.
Final goal is to make FunPack an ultimate answer for a novice's question "I don't know how to generate — what do I install and how do I start?" and for a professional's question "I need a UI with all the cutting edge techniques available on day 0 — which one?"
Preparation for the v5 had started.
FunPack v5.0 "Cunning Cranberry" — coming fall 2026.
This branch is a clean start. Classic FunPack lives on main.