this derivation will be built:
  /nix/store/7ayi8nfsmnys916dwb7qf8djz6slrksx-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/7ayi8nfsmnys916dwb7qf8djz6slrksx-bcachefs-module-7.0.0-39-generic.drv'...