"comfy install" with "--fast-deps" broken in 1.6.1

[Jinnai]

Describe the bug
comfy-cli version 1.6.1 broke "comfy install" with "--fast deps"

To Reproduce

• I'm using nvidia/cuda:12.9.1-devel-ubuntu24.04 as my base image with python 3.13
• install comfy-cli 1.6.1
• run comfy --skip-prompt install --fast-deps --nvidia
• ComfyUI launch fails with error:

Traceback (most recent call last):
  File "/root/comfy/ComfyUI/main.py", line 13, in <module>
    import utils.extra_config
  File "/root/comfy/ComfyUI/utils/extra_config.py", line 2, in <module>
    import yaml
ModuleNotFoundError: No module named 'yaml'

• or run with run comfy --skip-prompt install --fast-deps --nvidia --cuda-version 12.9
• ComfyUI launch fails with error:

Traceback (most recent call last):
  File "/root/comfy/ComfyUI/main.py", line 12, in <module>
    from app.assets.seeder import asset_seeder
  File "/root/comfy/ComfyUI/app/assets/seeder.py", line 11, in <module>
    from app.assets.scanner import (
    ...<12 lines>...
    )
  File "/root/comfy/ComfyUI/app/assets/scanner.py", line 7, in <module>
    from app.assets.database.queries import (
    ...<16 lines>...
    )
  File "/root/comfy/ComfyUI/app/assets/database/queries/__init__.py", line 1, in <module>
    from app.assets.database.queries.asset import (
    ...<8 lines>...
    )
  File "/root/comfy/ComfyUI/app/assets/database/queries/asset.py", line 1, in <module>
    import sqlalchemy as sa
ModuleNotFoundError: No module named 'sqlalchemy'

the same commands work with comfy-cli 1.6.0 or with comfy-cli 1.6.1 without --fast-deps

[dosubot]

This appears to be related to a Python environment resolution bug that was fixed in PR #375. The fix addressed an issue where dependencies were being installed to comfy-cli's isolated environment (when installed via pipx/uv tool) instead of the workspace Python where ComfyUI runs.

However, based on your report, it sounds like 1.6.1 is actually causing the issue rather than fixing it, which is the opposite of what the PR intended. Could you confirm:

1. How did you install comfy-cli? (pipx, uv tool, pip directly, etc.)
2. Is this a fresh install, or did you upgrade from 1.6.0?
3. Are you using a virtual environment for ComfyUI?

The changes between 1.6.0 and 1.6.1 also modified how PyTorch index URLs are handled in the --fast-deps path, switching from --extra-index-url to --index-url for NVIDIA installations. This change plus the environment resolution logic may have introduced a regression.

As a workaround, you could try installing without --fast-deps (as you noted works), or downgrading to 1.6.0 until this is resolved.

To reply, just mention @dosu.

---

Docs are dead. Just use Dosu.

[Jinnai]

fresh install with uv pip install --compile-bytecode comfy-cli==1.6.1 no virtual env

[bigcat88]

Hello. Thanks for reporting this - it looks like it needs to be fixed.

I will look into it and try to have a new version out by Monday with a fix

[bigcat88]

Version 1.7.0 has been released. I hope it helps. Please let us know if it still doesn't work for you.