Build dependency conflict

[Pooguin]

Hi,

I'm trying to clone and self-host the app. However, I ran into this error when installing the required python (python 3.10.16) libraries:

ERROR: Cannot install -r requirements.txt (line 52) and librosa==0.10.1 because these package versions have conflicting dependencies.
The conflict is caused by:
    The user requested librosa==0.10.1
    spleeter 2.3.2 depends on librosa<0.9.0 and >=0.8.0

I have tried to work around the issue by dropping the 2.3.2 requirement on spleeter in the requirements.txt. However, the similar issue persists

The conflict is caused by:
    The user requested httpx==0.28.1
    spleeter 2.4.2 depends on httpx<0.20.0 and >=0.19.0
    spleeter 2.4.0 depends on httpx<0.20.0 and >=0.19.0
    spleeter 2.3.2 depends on httpx<0.20.0 and >=0.19.0
    spleeter 2.1.0 depends on httpx<0.17.0 and >=0.16.1

Further dropping httpx and librosa restrictions in the requirements.txt file also return more dependency errors with tensorflow, spleeter, librosa, and pumpp

Can I clarify which versions of spleeter and its dependencies you are currently using?

My current environment:
Ubuntu 22.04.5
Node 18.20 (with npm)
python 3.10.16

Thanks!

p.s. I greatly appreciate your effort on this app. It has been extremely helpful to me.

[ptnghia-j]

Hi,

Thanks for your report.

Some of the dependencies (particularly from spleeter) have outdated version constraints that conflict with the newer packages listed in requirements.txt. Modern versions of pip enforce these constraints strictly, which causes the installation to fail in a clean environment.

The versions in the current requirements.txt work correctly under my testing, so the quickest way to get around the resolver conflict is to install without dependency resolution:

pip install --no-deps -r requirements.txt

This should install the environment successfully and run as intended.

Let me know if you encounter other issues.

[Pooguin]

Hi, thanks for your reply
I've tried to run with --no-deps, which installed all packages successfully.

However, when running
python app.py
I encountered issues with missing modules, which I suspect come from some of the package dependencies.

I managed to fix this issue by manually

pip install torch==2.6.0
pip install flask==3.0.3
pip install flask-limiter==3.5.0

which installed their dependencies
(perhaps there was also another package too? Sorry I forgot which one)

Afterwards python app.py succeed to run, and http://localhost:5001/ returns
{"message":"Audio analysis API is running","status":"healthy"}

(I haven't tested this, but maybe removing spleeter (or other packages?) from the requirements.txt, then manually installing with --no-deps would resolve the issue?)

Further issue below:

[Pooguin]

After successfully running the python backend, I've tried to fire up the front end (after installing with npm install) with
npm run dev

This returned

> chord-mini-app@0.5.3 dev
> next dev -p 3000

You are using Node.js 18.20.8. For Next.js, Node.js version ">=20.9.0" is required.

However, when I visited http://localhost:3000/, I get
localhost refused to connect.

I ran netstat -nltp to see what was running, but it only listed the 5001 python backend and fluidsynth

I am unsure if my problem is with the npm install, or some other issue?

Again, thanks a lot

[ptnghia-j]

It appears to be Node.js version issue rather than npm install. Have you tried upgraded Node.js version?

I suggest you can try upgrading Node, and then reinstall frontend dependencies under the newer Node version, then start the frontend again. So reinstalling everything under new node version to see if that resolves the issues:

node -v
npm -v
nvm install 20
nvm use 20
rm -rf node_modules package-lock.json
npm install
npm run dev

[Pooguin]

Everything works now. Thanks a lot!

[cloph-dsp]

PR #205 splits spleeter (+ norbert, ffmpeg-python) into \python_backend/requirements-spleeter.txt. The main
equirements.txt\ no longer pulls in spleeter, so the \librosa<0.9.0\ and \httpx<0.20.0\ conflicts are gone.

Install spleeter only if you need Beat-Transformer:
\\�ash
pip install -r python_backend/requirements.txt # core, no conflicts
pip install -r python_backend/requirements-spleeter.txt # optional
\
This also aligns with the existing README guidance that recommends installing without spleeter (
equirements_nospleeter.txt\ approach).