this derivation will be built:
  /nix/store/7zsn7af6hfs1788xpw6vkgjzrqw8nqvd-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/7zsn7af6hfs1788xpw6vkgjzrqw8nqvd-bcachefs-module-7.0.0-30-generic.drv'...