these 3 derivations will be built:
  /nix/store/gy47sjrvff8k13f6q0gsj61rq3w59cap-treefmt.toml.drv
  /nix/store/sa9l7h3xf8dapgnq1vdm588f4szrprfj-treefmt.drv
  /nix/store/bqa6rgcnh5s2g8wsvhdbh0hsnl40rp4a-nix-shell.drv
building '/nix/store/gy47sjrvff8k13f6q0gsj61rq3w59cap-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/sa9l7h3xf8dapgnq1vdm588f4szrprfj-treefmt.drv'
treefmt> structuredAttrs is enabled
building '/nix/store/bqa6rgcnh5s2g8wsvhdbh0hsnl40rp4a-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