this derivation will be built: /nix/store/635cnfag2hld9iihdljpqjvim46gaqak-bcachefs-module-7.0.0-34-generic.drv building '/nix/store/635cnfag2hld9iihdljpqjvim46gaqak-bcachefs-module-7.0.0-34-generic.drv'...