these 2 derivations will be built:
  /nix/store/8xmavrc0krcshiqn5aqh50ify1sy1rxb-flake-inputs.drv
  /nix/store/rs3cj2x1csmfijs76kcd1cssrm4fcqv0-check-flake-inputs.drv
building '/nix/store/8xmavrc0krcshiqn5aqh50ify1sy1rxb-flake-inputs.drv'
building '/nix/store/rs3cj2x1csmfijs76kcd1cssrm4fcqv0-check-flake-inputs.drv'

upload niks3: ok