these 2 derivations will be built: /nix/store/cx0grirzgm662ask54s0vynvzj4k2n2h-flake-inputs.drv /nix/store/xs1rgg6xj7chkpd76rd216cmyy4lvr7y-check-flake-inputs.drv building '/nix/store/cx0grirzgm662ask54s0vynvzj4k2n2h-flake-inputs.drv' building '/nix/store/xs1rgg6xj7chkpd76rd216cmyy4lvr7y-check-flake-inputs.drv' upload niks3: ok