this derivation will be built:
  /nix/store/2b1i7qmzr8dfvdwkgs5ymawhfnr50pzd-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/2b1i7qmzr8dfvdwkgs5ymawhfnr50pzd-bcachefs-module-7.0.0-38-generic.drv'...