these 2 derivations will be built:
  /nix/store/ijy6jaghg7g3m7b7g434cacgh70p866a-swing_ninja.zip.drv
  /nix/store/yz406gn22y3n5ldzyr0gk2kv3n6j6dqs-ue4demos-swing_ninja.drv
building '/nix/store/lqann0nc5myhf1572vpk46f9nxzyx0rh-swing_ninja.zip.drv'
swing_ninja.zip> 
swing_ninja.zip> trying https://ludios.org/mirror/ue4demos/swing_ninja.zip
swing_ninja.zip>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
swing_ninja.zip>                                  Dload  Upload   Total   Spent    Left  Speed
swing_ninja.zip> 100 44.2M  100 44.2M    0     0  12.7M      0  0:00:03  0:00:03 --:--:-- 12.7M
building '/nix/store/yz406gn22y3n5ldzyr0gk2kv3n6j6dqs-ue4demos-swing_ninja.drv'
ue4demos-swing_ninja> Archive:  /nix/store/wy5laaz3ia3k9pk5746xkncyccw5dbv5-swing_ninja.zip
ue4demos-swing_ninja>    creating: Swing Ninja/
ue4demos-swing_ninja>    creating: Swing Ninja/Engine/
ue4demos-swing_ninja>    creating: Swing Ninja/Engine/Binaries/
ue4demos-swing_ninja>    creating: Swing Ninja/Engine/Binaries/Linux/
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/SwingNinja  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libicudata.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libicui18n.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libicuio.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libicule.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libiculx.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libicutu.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libicuuc.so  
ue4demos-swing_ninja>   inflating: Swing Ninja/Engine/Binaries/Linux/libopenal.so.1  
ue4demos-swing_ninja>    creating: Swing Ninja/SwingNinja/
ue4demos-swing_ninja>    creating: Swing Ninja/SwingNinja/Content/
ue4demos-swing_ninja>    creating: Swing Ninja/SwingNinja/Content/Paks/
ue4demos-swing_ninja>   inflating: Swing Ninja/SwingNinja/Content/Paks/SwingNinja-LinuxNoEditor.pak  
ue4demos-swing_ninja>    creating: Swing Ninja/SwingNinja/Saved/
ue4demos-swing_ninja>    creating: Swing Ninja/SwingNinja/Saved/Config/
ue4demos-swing_ninja>   inflating: Swing Ninja/SwingNinja/Saved/Config/controller.vdf  
ue4demos-swing_ninja>  extracting: Swing Ninja/SwingNinja/swingninja.png  
ue4demos-swing_ninja> Swing Ninja

upload niks3: ok