this derivation will be built:
  /nix/store/f40mnvnjbxnw2i2r067pv14031mdbwb4-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/f40mnvnjbxnw2i2r067pv14031mdbwb4-bcachefs-module-7.0.0-29-generic.drv'...