this derivation will be built:
  /nix/store/fg6dvav1c2xwlc9zxzs419n60rjjqqkb-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/fg6dvav1c2xwlc9zxzs419n60rjjqqkb-bcachefs-module-7.0.0-39-generic.drv'...