this derivation will be built:
  /nix/store/sg04smqad3vmplpsabhki6zsz48pw122-check-lean-ctx.drv
building '/nix/store/sg04smqad3vmplpsabhki6zsz48pw122-check-lean-ctx.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/sg04smqad3vmplpsabhki6zsz48pw122-check-lean-ctx.drv'

upload niks3: ok