these 2 derivations will be built:
  /nix/store/h065cb33mjrbm7zgbv8j1q83gm3gj0am-flake-inputs.drv
  /nix/store/4105vhks3icfqgcflnshxkqhq2wahzdp-check-flake-inputs.drv
building '/nix/store/h065cb33mjrbm7zgbv8j1q83gm3gj0am-flake-inputs.drv'
building '/nix/store/4105vhks3icfqgcflnshxkqhq2wahzdp-check-flake-inputs.drv'

upload niks3: ok