this derivation will be built:
  /nix/store/7h1p7pa1i2120dmgm0msri87l9i7qcs6-pyrite-nix-concurrency.drv
building '/nix/store/7h1p7pa1i2120dmgm0msri87l9i7qcs6-pyrite-nix-concurrency.drv'
pyrite-nix-concurrency> facter-threads=4
pyrite-nix-concurrency> facter-physical-cores=2
pyrite-nix-concurrency> max-jobs=2
pyrite-nix-concurrency> cores=2
pyrite-nix-concurrency> effective-cores=2
pyrite-nix-concurrency> demand=4

upload niks3: ok