this derivation will be built: /nix/store/jn42lwhmj7qj4w5i5v195jkqwd597prk-bcachefs-module-7.0.0-38-generic.drv building '/nix/store/jn42lwhmj7qj4w5i5v195jkqwd597prk-bcachefs-module-7.0.0-38-generic.drv'...