<details>
<summary>You said: </summary>
"getting a block away from the left platform, which doesn't seem feasible without dropping down." But I don't see how how I would do it from below either… I guess I need to place the moth south of the button, then push it north with a stack (maybe with the light or the lizard on top of a block) but I don't see how to get a block in that column.
</details>
It seems I'm as bad with details/summary formatting as solving the puzzle…