this derivation will be built:
  /nix/store/fhbykfn2myfxvr6dddmn0xrmjpcm2c4z-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/fhbykfn2myfxvr6dddmn0xrmjpcm2c4z-bcachefs-module-7.0.0-39-generic.drv'...