this derivation will be built:
  /nix/store/4d820w5fparbfqn74vzfk040gj2hpz7f-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/4d820w5fparbfqn74vzfk040gj2hpz7f-bcachefs-module-7.0.0-29-generic.drv'...