unpacking 'https://github.com/NixOS/nixpkgs/archive/d2f67949798825fe853f7c5d0492b8bf016d3f88.tar.gz' into the Git cache...
this derivation will be built:
  /nix/store/fixhncmnzgzwqmpf3gzdr6jip8amkbf5-bcachefs-module-7.2.2-arch1-1.drv
this path will be fetched (242.77 MiB download, 683.59 MiB unpacked):
  /nix/store/yxq95msqp4lwb1wa44jcdwf7998170mi-linux-7.2.2-dev
copying path '/nix/store/yxq95msqp4lwb1wa44jcdwf7998170mi-linux-7.2.2-dev' from 'https://cache.nixos.org'...
building '/nix/store/fixhncmnzgzwqmpf3gzdr6jip8amkbf5-bcachefs-module-7.2.2-arch1-1.drv'...