this derivation will be built: /nix/store/x8ln71xda5yg3hklbzwcq20m9lypplp8-bcachefs-module-7.0.0-31-generic.drv building '/nix/store/x8ln71xda5yg3hklbzwcq20m9lypplp8-bcachefs-module-7.0.0-31-generic.drv'...