this derivation will be built:
  /nix/store/c35ch2qyr9hlr7xzipiwq27h7798qsbs-bcachefs-module-7.1.5-arch1-2.drv
this path will be fetched (231.95 MiB download, 644.18 MiB unpacked):
  /nix/store/d0xj59js7xsyrlf5jg173x4g9cl2lg76-linux-7.1.5-dev
copying path '/nix/store/d0xj59js7xsyrlf5jg173x4g9cl2lg76-linux-7.1.5-dev' from 'https://cache.nixos.org'...
building '/nix/store/c35ch2qyr9hlr7xzipiwq27h7798qsbs-bcachefs-module-7.1.5-arch1-2.drv'...