I'm trying to simulate the simplest little circuit with ngspice and failing.

**.subckt tooltest
X1 OUT OUT GND GND sky130_fd_pr__nfet_01v8 w=5u l=1u m=1
R1 VDD OUT 1k m=1
**** begin user architecture code
.lib sky130_fd_pr/models/sky130.lib.spice tt
.op
.save all
Vsupply VDD GND dc 1.8V
.param temp=27
**** end user architecture code
**.ends
.GLOBAL GND
.GLOBAL VDD
.end