this derivation will be built:
  /nix/store/kzpzq3ksqb89f6dks1jzk53njqg47djm-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/kzpzq3ksqb89f6dks1jzk53njqg47djm-bcachefs-module-7.0.0-31-generic.drv'...