this derivation will be built:
  /nix/store/mx94lz898qxyiclf5kw0bbgxf4082ij2-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mx94lz898qxyiclf5kw0bbgxf4082ij2-bcachefs-module-7.0.0-39-generic.drv'...