these 8 derivations will be built:
  /nix/store/3klskzfmz3dflvyw945662sci61k4b5f-menu.drv
  /nix/store/9g1rswxcmvkl7bi1b7ccigjl9n7x74jd-naked-stdenv.drv
  /nix/store/bswh4wmclrkr4vdzzx69mvjrz088vzrb-builder.pl.drv
  /nix/store/rmdr0b0qs4r78gbjbkgvc1lgdpb3wyw6-devshell-env.bash.drv
  /nix/store/zvil6rzb2v524qzhika6p579x04czy63-devshell-executable-1-entrypoint.drv
  /nix/store/k5mximk04xg2rdqq9a5d5hq4bfnxay3g-devshell-executable-1-dir.drv
  /nix/store/ii6dilhq5fhw0nv7k22bjfp4qwfm7qhc-devshell-executable-1.drv
  /nix/store/abb9lw9sxvm8zdwy4z7z1qv9sn51i6wr-tests.core.devshell.devshell-executable-1.drv
this path will be fetched (56.2 KiB download, 268.1 KiB unpacked):
  /nix/store/sqw9kyl8zrfnkklb3vp6gji9jw9qfgb5-hello-2.12.2
building '/nix/store/rmdr0b0qs4r78gbjbkgvc1lgdpb3wyw6-devshell-env.bash.drv'
building '/nix/store/zvil6rzb2v524qzhika6p579x04czy63-devshell-executable-1-entrypoint.drv'
building '/nix/store/k5mximk04xg2rdqq9a5d5hq4bfnxay3g-devshell-executable-1-dir.drv'
devshell-executable-1-dir> created 3 symlinks in user environment
building '/nix/store/ii6dilhq5fhw0nv7k22bjfp4qwfm7qhc-devshell-executable-1.drv'
building '/nix/store/abb9lw9sxvm8zdwy4z7z1qv9sn51i6wr-tests.core.devshell.devshell-executable-1.drv'
tests.core.devshell.devshell-executable-1> Hello, world!

upload niks3: ok