these 2 derivations will be built:
  /nix/store/vzbmk72mlzyzlyijkndg2f2akj13pffk-flake-inputs.drv
  /nix/store/nmzh8pn0yw3gp4jzqm3bh7v162kr2izy-check-flake-inputs.drv
building '/nix/store/vzbmk72mlzyzlyijkndg2f2akj13pffk-flake-inputs.drv'
building '/nix/store/nmzh8pn0yw3gp4jzqm3bh7v162kr2izy-check-flake-inputs.drv'

upload niks3: ok