v2.1.0

Summary

2.1.0 focused on exporter correctness, installation/frontend compatibility, and generated-script runtime lifecycle behavior.

Highlights

Exporter correctness

• Fixed string-seed randomization in generated code.
• Added focused regression coverage for generator edge cases, including:
  • string seed nodes
  • Windows-style path strings
  • trailing backslashes in strings
  • unsafe rgthree kwargs
  • subgraph/upscaler identifier handling
• Added new fixture coverage so these cases stay locked down.

Compatibility and installation

• Declared official Python support as 3.12+.
• Removed the hidden import-time pip bootstrap behavior and replaced it with explicit uv sync guidance.
• Updated the Web UI save flow to avoid prompt(), improving compatibility with ComfyUI Desktop.
• Standardized the default downloaded script filename to workflow_api.py.
• Added contract tests covering supported Python metadata and frontend save defaults.

Generated runtime behavior

• Generated scripts now perform best-effort ComfyUI cleanup after workflow execution.
• Exported main() now runs cleanup in a finally block.
• Added opt-in aggressive unload support for embedded/repeated-call use cases:
  • main(unload_models=True)
  • COMFYUI_TOPYTHON_UNLOAD_MODELS=1
• Documented supported ComfyUI runtime / VRAM-related flags for generated scripts.
• Guarded cleanup hooks so teardown errors do not override the real workflow failure.

User-visible changes

• Better behavior when exporting workflows that contain tricky string values or previously fragile node shapes.
• Clearer environment expectations: Python 3.12+ and uv are now the supported setup path.
• Better Desktop compatibility for File -> Save As Script.
• Generated scripts now clean up ComfyUI runtime state more safely after execution, while still allowing model reuse by
  default.

What's Changed

• Make generator codegen regressions explicit and fix string seed rand by @pydn in #151
• Clarify Python support and harden export/install compatibility by @pydn in #152
• Add generated runtime cleanup after workflow execution by @pydn in #153

Full Changelog: v2.0.0...v2.1.0