this derivation will be built:
  /nix/store/9g7b45i2jb6w8db2m15np72dih88lyf2-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/9g7b45i2jb6w8db2m15np72dih88lyf2-bcachefs-module-7.0.0-38-generic.drv'...