this derivation will be built:
  /nix/store/lsp6knk40i611wjj16wkgrzc8vvmlqmz-iets-langtests.drv
building '/nix/store/lsp6knk40i611wjj16wkgrzc8vvmlqmz-iets-langtests.drv'
iets-langtests> pass=290 fail=0
iets-langtests> 

upload niks3: ok