this derivation will be built:
  /nix/store/kjwg5mwkkkjm509jrm4szrfg5k4v26np-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/kjwg5mwkkkjm509jrm4szrfg5k4v26np-bcachefs-module-7.0.0-29-generic.drv'...