this derivation will be built:
  /nix/store/md6ia2pwjz2va43fc84zxmxh3r8kyigw-bcachefs-module-7.1.9-arch1-2.drv
this path will be fetched (232.52 MiB download, 645.29 MiB unpacked):
  /nix/store/fsn4w6za5phgm5yjzf8zyq4cvn0hqwpk-linux-7.1.9-dev
copying path '/nix/store/fsn4w6za5phgm5yjzf8zyq4cvn0hqwpk-linux-7.1.9-dev' from 'https://cache.nixos.org'...
building '/nix/store/md6ia2pwjz2va43fc84zxmxh3r8kyigw-bcachefs-module-7.1.9-arch1-2.drv'...