this derivation will be built:
  /nix/store/bf7cr64aiizi37z1yf59n0aw4r3fgq9n-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/bf7cr64aiizi37z1yf59n0aw4r3fgq9n-bcachefs-module-7.0.0-39-generic.drv'...