this derivation will be built:
  /nix/store/8sw31x9j0y8m1fgkvin07acs39bigrqp-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/8sw31x9j0y8m1fgkvin07acs39bigrqp-bcachefs-module-7.0.0-31-generic.drv'...