Add an option to define a constraints.txt file

[almfisch]

Custom nodes often have something like numpy in requirements.txt.
This means that the latest version is installed during installation, e.g., numpy 2.3. This causes problems because numba only runs with numpy 2.1. This could be prevented by creating a contraints.txt file and writing numpy==2.1.0 in it, for example, so that custom nodes do not install any other version.

My idea would be to add a field in the manager where you can specify the path to a contraints.txt file. If the field is not empty and the constraints.txt file is found, the manager should take this into account when restarting.

Something like
if constraints_path:
([‘install’, ‘-r’, requirements_path] ‘--constraint’, constraints_path)
else:
([‘install’, ‘-r’, requirements_path])

Or is it the same like this:
Configurable pip auto fix: <USER_DIRECTORY>/default/ComfyUI-Manager/pip_auto_fix.list

[audovoice]

I would like this as well. it would be maybe a little simpler that what might exist as an alternative.
Just looking into this myself. I have an even greater limitation numpy 1.26, torch==2.3.1+cu118.

But looking at the tools already available.
blacklist
and overrides might be effective. I don't know what overide or auto fix does. I know snapshot is not effective for me.

If you add to the blacklist the versions that you don't want. Then maybe it can prevent manager from constantly installing the libraries that break your install.

I have not tried this solution yet. my solution, such as it is was to use a bat to install requirements to downgrade.
not a great solution.
pip install --no-index --find-links="%SRC%" --force-reinstall torch==2.3.1+cu118 torchvision==0.18.1+cu118 torchaudio==2.3.1
If you set a few core libraries it will hold a version OK. the newest comfyu broke it for me when it required python 3.13.
But you should be in a better situation with numpy==2.1.0 as your target.

In ComfyUI-Manager V3.0 and later, configuration files and dynamically generated files are located under <USER_DIRECTORY>/default/ComfyUI-Manager/.
    <USER_DIRECTORY>
        If executed without any options, the path defaults to ComfyUI/user.
        It can be set using --user-directory <USER_DIRECTORY>.
    Basic config files: <USER_DIRECTORY>/default/ComfyUI-Manager/config.ini
    Configurable channel lists: <USER_DIRECTORY>/default/ComfyUI-Manager/channels.ini
    Configurable pip overrides: <USER_DIRECTORY>/default/ComfyUI-Manager/pip_overrides.json
    Configurable pip blacklist: <USER_DIRECTORY>/default/ComfyUI-Manager/pip_blacklist.list
    Configurable pip auto fix: <USER_DIRECTORY>/default/ComfyUI-Manager/pip_auto_fix.list
    Saved snapshot files: <USER_DIRECTORY>/default/ComfyUI-Manager/snapshots
    Startup script files: <USER_DIRECTORY>/default/ComfyUI-Manager/startup-scripts
    Component files: <USER_DIRECTORY>/default/ComfyUI-Manager/components