if anyone else runs into this in NixOS... "Error: command required for rootless mode with multiple IDs: exec: "newuidmap": executable file not found in $PATH"

The magic line that fixed it for me was...
"path = [ "/run/wrappers" ];"

Don't worry, it's only in the mods own crops.

I always pictured it like tiling forward running, or a speedometer tilting.