these 2 derivations will be built: /nix/store/vvi63rxa7zyk4zmaxaa9j5jmwxdkdqlf-flake-inputs.drv /nix/store/r3x2ys6gpls9rz5j05vgp1hygwck4klc-check-flake-inputs.drv building '/nix/store/vvi63rxa7zyk4zmaxaa9j5jmwxdkdqlf-flake-inputs.drv' building '/nix/store/r3x2ys6gpls9rz5j05vgp1hygwck4klc-check-flake-inputs.drv' upload niks3: ok