this derivation will be built:
  /nix/store/qh4id3vk3nxbbp84hgj68029s1xkdi5p-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/qh4id3vk3nxbbp84hgj68029s1xkdi5p-bcachefs-module-7.0.0-39-generic.drv'...