Select LoRA (SimpleTuner Flux 2)

SimpleTunerFlux2LoRASelector ("Select LoRA (SimpleTuner Flux 2)") is the pack's least glamorous node, but it's also the one that shows the pack's author thinking about a real annoyance: SimpleTuner dumps LoRAs into an awkward directory tree (SimpleTuner/output/<project>/checkpoint-<step>/pytorch_lora_weights.safetensors), and typing those paths by hand is miserable. This node gives you the same dropdown the Load LoRA node has - but instead of loading the LoRA, it resolves your choice to a full file path and outputs it as a plain STRING.

How it works

It scans the same two places as the Load LoRA node's dropdown: SimpleTuner's output directory and your ComfyUI/models/loras/ folder. Pick an entry, and select_lora resolves it to an absolute path (SimpleTuner output first, then the ComfyUI loras folder). The "none" choice outputs an empty string, which keeps it safe to leave in a graph.

The one required input is lora_name (the dropdown). The output is lora_path - a STRING.

What you'd actually do with it

The obvious wiring is to feed lora_path into the Load LoRA node's lora_path_override field. The loader already has its own copy of this dropdown, though, so that alone is redundant. Where the Selector earns its keep is when you want the path as data rather than a side effect: pass it to a node that writes filenames, log it, or drive a workflow that branches based on which LoRA is selected. If you're doing none of those, it's a convenience node you can honestly skip - the loader covers you.

Installing the pack

Same one-time install as the rest of the pack:

cd ComfyUI/custom_nodes
git clone --recursive https://github.com/flowers6421/ComfyUI-SimpleTunerFlux2.git
cd ComfyUI-SimpleTunerFlux2
./install.sh          # Linux/macOS
# python install.py   # Windows

or via ComfyUI Manager by searching "ComfyUI-SimpleTunerFlux2", then restart.

Where people get burned

• The dropdown looks empty. It only populates from SimpleTuner's output/ tree and ComfyUI/models/loras/. If your LoRA lives somewhere else, the dropdown won't see it - that's what lora_path_override on the Load LoRA node is for.
• It's a path, not a pipeline. Wire this into a node that expects the ST_FLUX2_PIPELINE type and ComfyUI will just refuse the connection. It's a string source, nothing more.

If you build the LoRA-switching workflow where the Unloader matters, this node can be the ergonomic glue around it. On its own it's the quiet utility of the pack - mostly useful in the corner case, never harmful in the graph.