Having enabled services.xserver.exportConfiguration = true; when I boot my system.nixos.label has been overwritten by Export_X_Configuration. Anyone know how to identify which [specialisation|specialization] was booted?
You must have done that yourself at some point; exportConfiguration only touches the contents of environment.etc.
hmmmm, I think you are right… 
Thanks… 
Now to work how in the hell I am applying the same label to all specialisations! 