this derivation will be built:
  /nix/store/yfpc6z8hvn3n7l1c3nyd60y6j4i18g2n-debian-12-generic-amd64-20260923-2610.qcow2.drv
building '/nix/store/m4gaw2gkrsiwcxz7mdlhjl25g6hgqly5-debian-12-generic-amd64-20260923-2610.qcow2.drv'
debian-12-generic-amd64-20260923-2610.qcow2> structuredAttrs is enabled
debian-12-generic-amd64-20260923-2610.qcow2> 
debian-12-generic-amd64-20260923-2610.qcow2> trying https://cloud.debian.org/images/cloud/bookworm/20260923-2610/debian-12-generic-amd64-20260923-2610.qcow2
debian-12-generic-amd64-20260923-2610.qcow2>   % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
debian-12-generic-amd64-20260923-2610.qcow2>                                  Dload  Upload  Total   Spent   Left   Speed
debian-12-generic-amd64-20260923-2610.qcow2> 100    417 100    417   0      0   5419      0                              0
debian-12-generic-amd64-20260923-2610.qcow2> 100 427.0M 100 427.0M   0      0 57.93M      0   00:07   00:07         49.46M

upload niks3: ok