unpacking 'https://github.com/NixOS/nixpkgs/archive/753cc8a3a87467296ddd1fa93f0cc3e81120ee46.tar.gz' into the Git cache...
this derivation will be built:
  /nix/store/wygpmpnir75lnm78vhyy7wv6hh8hh1wf-bcachefs-module-7.1.3-arch2-1.drv
building '/nix/store/wygpmpnir75lnm78vhyy7wv6hh8hh1wf-bcachefs-module-7.1.3-arch2-1.drv'...