Nix updates.

8 jobs for master in 15 seconds (queued for 10 seconds)
Status Name Job ID Coverage
  Docs
passed build-docs #47660

00:00:04

failed build-docs #47657

00:00:00

failed build-docs #47653

00:00:01

 
  Jupyter
passed build-notebooks #47661

00:00:05

passed build-parfile #47655

00:00:01

failed build-notebooks #47654

00:00:01

 
  Deploy
passed pages #47656

00:00:03

passed pages:deploy

00:00:00