this derivation will be built:
  /nix/store/srnpf78iy3y5w58846d8hh5q7affnzwa-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/srnpf78iy3y5w58846d8hh5q7affnzwa-bcachefs-module-7.0.0-39-generic.drv'...