these 3 derivations will be built:
  /nix/store/c78s1dmzjwshh57d4wgai79cff4a455n-uv-build-0.12.7.drv
  /nix/store/dv1ipsvzdjcmsagfd5zkc7z1vg8kb4zw-example-0.1.0.drv
  /nix/store/8i5jglq7fkiman3820mvmwxscmfazkpk-example-venv.drv