these 2 derivations will be built:
  /nix/store/12c3ffn36ky550v3q0n2h8ga3pzw9prp-flake-inputs.drv
  /nix/store/6hxh6x5pvpi99h2gp5gf41bmwa8flfbw-check-flake-inputs.drv
building '/nix/store/12c3ffn36ky550v3q0n2h8ga3pzw9prp-flake-inputs.drv'
building '/nix/store/6hxh6x5pvpi99h2gp5gf41bmwa8flfbw-check-flake-inputs.drv'

upload niks3: ok