unpacking 'https://github.com/NixOS/nixpkgs/archive/6774f7bc253789b113a4f39285dc0fa100abeacc.tar.gz' into the Git cache...
unpacking 'https://github.com/NixOS/nixpkgs/archive/e7a3ca8092b61ff85b6a45bf863ea2b2d6a661b3.tar.gz' into the Git cache...
this derivation will be built:
  /nix/store/z38w1fwrik1lc92c9lln1c1dvrdskcna-bcachefs-module-7.0.0-34-generic.drv
these 3 paths will be fetched (82.29 MiB download, 248.51 MiB unpacked):
  /nix/store/xr2ra8l5p6f2xvdc1ycly5kl45l324z6-gcc-15.3.0
  /nix/store/zx1w9bhvj1dlwd6qi3pqiak7wf99gyjm-gcc-wrapper-15.3.0
  /nix/store/3j37d83w38gi1b2ij2a7v1q7x22ca85s-stdenv-linux
copying path '/nix/store/xr2ra8l5p6f2xvdc1ycly5kl45l324z6-gcc-15.3.0' from 'https://cache.nixos.org'...
building '/nix/store/z38w1fwrik1lc92c9lln1c1dvrdskcna-bcachefs-module-7.0.0-34-generic.drv'...