this derivation will be built:
  /nix/store/gnphj4d5npyig56mll7q3bn68hysm68b-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/gnphj4d5npyig56mll7q3bn68hysm68b-bcachefs-module-7.0.0-39-generic.drv'...