this derivation will be built:
  /nix/store/my3mk7mkhwlxwg6m56rb2xnk6a5i0w86-iets-langtests.drv
building '/nix/store/my3mk7mkhwlxwg6m56rb2xnk6a5i0w86-iets-langtests.drv'
iets-langtests> pass=291 fail=0
iets-langtests> 

upload niks3: ok