this derivation will be built:
  /nix/store/5k5w6l70h0y8m6fxvwn2gan2a3plzr87-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/5k5w6l70h0y8m6fxvwn2gan2a3plzr87-bcachefs-module-7.0.0-31-generic.drv'...