this derivation will be built:
  /nix/store/29f309c93j8xq5f67r15vq1bcw9brqwi-bcachefs-module-7.0.0-30-generic-64k.drv
building '/nix/store/29f309c93j8xq5f67r15vq1bcw9brqwi-bcachefs-module-7.0.0-30-generic-64k.drv'...