this derivation will be built: /nix/store/vbpvfpbf93m1vy5wvz76xvn40x6jqw77-bcachefs-module-7.0.0-39-generic.drv building '/nix/store/vbpvfpbf93m1vy5wvz76xvn40x6jqw77-bcachefs-module-7.0.0-39-generic.drv'...