these 3 derivations will be built:
  /nix/store/ln1f6n4crb8msyghsdk3p6w119y55mvp-treefmt.toml.drv
  /nix/store/lrk8d428nq6yychh3nzdmsvwm2p39lnl-treefmt.drv
  /nix/store/q0j2y3yfnl617fvgmjrkihfg1i2k0j0f-nix-shell.drv
building '/nix/store/ln1f6n4crb8msyghsdk3p6w119y55mvp-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/lrk8d428nq6yychh3nzdmsvwm2p39lnl-treefmt.drv'
treefmt> structuredAttrs is enabled
building '/nix/store/q0j2y3yfnl617fvgmjrkihfg1i2k0j0f-nix-shell.drv'
nix-shell> Sourcing python-remove-tests-dir-hook
nix-shell> Sourcing python-catch-conflicts-hook.sh
nix-shell> Sourcing python-remove-bin-bytecode-hook.sh
nix-shell> Sourcing pypa-build-hook
nix-shell> Sourcing python-runtime-deps-check-hook
nix-shell> Using pythonRuntimeDepsCheckHook
nix-shell> Sourcing pypa-install-hook
nix-shell> Using pypaInstallPhase
nix-shell> Sourcing python-imports-check-hook.sh
nix-shell> Using pythonImportsCheckPhase
nix-shell> Sourcing python-namespaces-hook
nix-shell> Sourcing python-catch-conflicts-hook.sh
nix-shell> Running phase: buildPhase

upload niks3: ok