this derivation will be built: /nix/store/mzfbfv94i0pl3f6bii79jxn0mwdpjxa4-bcachefs-module-7.0.0-39-generic.drv building '/nix/store/mzfbfv94i0pl3f6bii79jxn0mwdpjxa4-bcachefs-module-7.0.0-39-generic.drv'...