Bool Unary Operation JK🐉

A node with exactly one operation looks like a joke until you need it. CM_BoolUnaryOperation is JakeUpgrade's boolean inverter: input a, output BOOLEAN, operation Not - that's it, not a. The point isn't the math, it's that inverting a boolean in ComfyUI otherwise means awkward contortions, and a one-option node you can read at a glance is the sane alternative.

Where you actually need an inverter

ComfyUI's condition nodes produce booleans with a particular polarity. The common frictions:

• A toggle that means "skip this" when the node you're driving expects "run this." One NOT inverts your intent instead of renaming everything.
• A condition node whose output is "is the mask empty," when you want "there is a mask."
• A guard that should fire on the absence of something - "no face detected" rather than "face detected."

Pattern: wire a condition node into a, take the BOOLEAN output into a switch or another gate. It chains cleanly with the pack's Bool And/OR nodes - not (a and b) and so on.

What you're not getting

No dropdown surprises (the op list has exactly one entry, Not), no hidden knobs. If you need a bitwise NOT on an integer - ~a, where ~0 = -1 - that lives in CM_IntUnaryOperation and it is not this. Different types, different semantics. For plain true/false logic, this is the one.

Installing it

Ships with ComfyUI-JakeUpgrade:

cd ComfyUI/custom_nodes
git clone https://github.com/jakechai/ComfyUI-JakeUpgrade
cd ComfyUI-JakeUpgrade
# Windows standalone: install.bat
# or: python_embeded\python.exe -s -m pip install -r requirements.txt
pip install -r requirements.txt   # non-Windows

Or ComfyUI Manager, search "JakeUpgrade", install, restart. Nothing to download.

Gotchas

• Output polarity is worth a glance before you wire it. "Not" is famously easy to misread in a busy graph; label it or know that the output is the inverse.
• Manager's JakeUpgrade / IPAdapter_plus conflict warning is a false positive from the pack's replacement/ folder - the README confirms those files are never loaded.
• ComfyUI-MultiGPU causes CUDA errors with recent ComfyUI; the README says disable it.