anchor.diff:            ln -s /usr/sbin /mnt/sbin
             ln -s /usr/lib /mnt/lib
             ln -s /usr/lib64 /mnt/lib64
  +          ${utillinux}/bin/mount -t proc none /mnt/proc
           ''}
   
           echo "unpacking RPMs..."
  
positive.code: 
          rm /mnt/.debug
  
          ${utillinux}/bin/umount /mnt/nix/store /mnt/tmp /mnt/proc
          ${utillinux}/bin/umount /mnt
        '';
  
  
negative.code: 
          chroot=$(type -tP chroot)
  
          # Make the Nix store available in /mnt, because that's where the RPMs live.
          mkdir -p /mnt/nix/store
          ${utillinux}/bin/mount -o bind /nix/store /mnt/nix/store
  