this derivation will be built:
  /nix/store/rfvnmnxyy28g811qm1wq7zvig4zhjgl7-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/rfvnmnxyy28g811qm1wq7zvig4zhjgl7-bcachefs-module-7.0.0-38-generic.drv'...