these 2 derivations will be built:
  /nix/store/7ipq171y9rd1spxfa6ld0ii3q382k4rk-flake-inputs.drv
  /nix/store/a0s7726099hybyifrwsz0csxnypmcds5-check-flake-inputs.drv
building '/nix/store/7ipq171y9rd1spxfa6ld0ii3q382k4rk-flake-inputs.drv'
building '/nix/store/a0s7726099hybyifrwsz0csxnypmcds5-check-flake-inputs.drv'

upload niks3: ok