this derivation will be built: /nix/store/n973baxgfxmb033zn20zqfjjmrnch2yq-bcachefs-module-7.0.0-29-generic.drv building '/nix/store/n973baxgfxmb033zn20zqfjjmrnch2yq-bcachefs-module-7.0.0-29-generic.drv'...