this derivation will be built:
  /nix/store/pwvn4dlc8m859m80icwdcgd04aawkdwp-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/pwvn4dlc8m859m80icwdcgd04aawkdwp-bcachefs-module-7.0.0-27-generic.drv'...