Trouble installing NixOS to an older ThinkPad machine

I am having trouble installing NixOS to an older T460 machine.

It doesn’t make progress after it reaches 95 percent.

What am I able to do about this?

The last thing I see in the log is the user-units derivation.

Hi,

Are you using the graphical installer? Apparently there is an issue in 26.05 that sounds similar (see here.)

You could install manually as described here.