this derivation will be built:
  /nix/store/9jn1bpxf20z9511wy8lqyv6gzn14fykl-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/9jn1bpxf20z9511wy8lqyv6gzn14fykl-bcachefs-module-7.0.0-28-generic.drv'...