Add comprehensive pip dependency conflict resolution framework as draft implementation. This is self-contained and does not affect existing
ComfyUI Manager functionality.
Key components:
- pip_util.py with PipBatch class for policy-driven package management
- Lazy-loaded policy system supporting base + user overrides
- Multi-stage policy execution (uninstall → apply_first_match → apply_all_matches → restore)
- Conditional policies based on platform, installed packages, and ComfyUI version
- Comprehensive test suite covering edge cases, workflows, and platform scenarios
- Design and implementation documentation
Policy capabilities (draft):
- Package replacement (e.g., PIL → Pillow, opencv-python → opencv-contrib-python)
- Version pinning to prevent dependency conflicts
- Dependency protection during installations
- Platform-specific handling (Linux/Windows, GPU detection)
- Pre-removal and post-restoration workflows
Testing infrastructure:
- Pytest-based test suite with isolated environments
- Dependency analysis tools for conflict detection
- Coverage for policy priority, edge cases, and environment recovery
Status: Draft implementation complete, integration with manager workflows pending.
Added a new custom The vae-decode-hdr repository is for a custom ComfyUI node designed to preserve High Dynamic Range (HDR) data during VAE decoding. The developer, Sumit Chatterjee, created this node to address the limitation of ComfyUI's default VAE Decode node, which compresses outputs to a 0-1 pixel range, resulting in a loss of dynamic range.
The node uses a "scientific approach" to analyze the VAE's conv_out layer and intelligently expand highlight regions, bypassing the clipping that typically occurs. The repository also includes a companion tool called the "Linear EXR Export" node, which is essential for creating professional HDR output files that are ready for use in compositing software. The project is licensed under the MIT License and is open to contributions.ComfyUI node for HDR VAE decoding.
