these 2 derivations will be built:
  /nix/store/j9v3ndqz8a1qyq1blwy6mp2vfg3gkgdv-flake-inputs.drv
  /nix/store/zr1ykb89jhm89rg4vq9dnqk24vfk5qmw-check-flake-inputs.drv
building '/nix/store/j9v3ndqz8a1qyq1blwy6mp2vfg3gkgdv-flake-inputs.drv'
building '/nix/store/zr1ykb89jhm89rg4vq9dnqk24vfk5qmw-check-flake-inputs.drv'

upload niks3: ok