these 2 derivations will be built:
  /nix/store/jf50g5vz0cjcaabz24j6xxpkbxnq9fzc-flake-inputs.drv
  /nix/store/nvc0p4i34n22fyzb2v92lb0cbp1gfxp5-check-flake-inputs.drv
building '/nix/store/jf50g5vz0cjcaabz24j6xxpkbxnq9fzc-flake-inputs.drv'
building '/nix/store/nvc0p4i34n22fyzb2v92lb0cbp1gfxp5-check-flake-inputs.drv'

upload niks3: ok