52094dae-9587-400c-9449-0c0ac30d2014

startCommand in railway.json "startCommand": "sudo apt-get update && sudo apt-get install libzbar-dev libzbar0 zbar-tools -y && python3 [main.py](main.py)",

deploy logs
Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease Hit:2 http://security.ubuntu.com/ubuntu jammy-security InRelease Hit:3 http://archive.ubuntu.com/ubuntu jammy-updates InRelease Hit:4 http://archive.ubuntu.com/ubuntu jammy-backports InRelease Reading package lists... Reading package lists... Building dependency tree... Reading state information... libzbar-dev is already the newest version (0.23.92-4build2). libzbar0 is already the newest version (0.23.92-4build2). zbar-tools is already the newest version (0.23.92-4build2). 0 upgraded, 0 newly installed, 0 to remove and 9 not upgraded. Traceback (most recent call last): File "main.py", line 5, in from moving_barcode import process_gif File "/app/moving_barcode.py", line 2, in from pyzbar.pyzbar import decode File "/opt/venv/lib/python3.8/site-packages/pyzbar/pyzbar.py", line 7, in from .wrapper import ( File "/opt/venv/lib/python3.8/site-packages/pyzbar/wrapper.py", line 151, in zbar_version = zbar_function( File "/opt/venv/lib/python3.8/site-packages/pyzbar/wrapper.py", line 148, in zbar_function return prototype((fname, load_libzbar())) File "/opt/venv/lib/python3.8/site-packages/pyzbar/wrapper.py", line 127, in load_libzbar libzbar, dependencies = zbar_library.load() File "/opt/venv/lib/python3.8/site-packages/pyzbar/zbar_library.py", line 65, in load raise ImportError('Unable to find zbar shared library') ImportError: Unable to find zbar shared library

can you provide a minimal reproducible example

yep

https://github.com/1x6/pyzbar-error

deploy this and it should reproduce the error

please remove the apt commands from the start command, you never want to to install packages like that during runtime

oh okay, how would you suggest i do it please

the link you provided in your original post does contain a link to the docs page that does show you how to install apt packages during build, not that it would automatically fix it, but that would be at least the correct way to install packages

when I'm back at my computer in several hours I will try to get your example working, in the mean time, please do remove the apt commands from the start command

i see, thank you. i'll try use that

much appreciated, will do

i've removed the apt commands from the startcommand and put them in nixpacks.toml like this

[phases.setup] aptPkgs = ['libzbar-dev', 'libzbar0', 'zbar-tools']

altho it still says ImportError: Unable to find zbar shared library

like 80% of the way there, but I doubt it's going to work anyway, while installing apt packages in the start command is something you should never do, it would technically work, so if it didn't actually work, then it's not going to work installing them during build either

turns out I won't be able to get on my computer for another while since I now have to leave the house after waking up, try this nixpacks.toml file that I have not validated to work -

[phases.setup]
    nixPkgs = ['...', 'zbar']

thanks for this, unfortunately it still does not work but i very much appreciate your help

thats a fair point 😭

are you testing with your minimal example too?

yeah i've been working on the minimal one all this time

are you familiar with Dockerfiles?

sadly not \😕

that's what I was gonna write for you

i've heard of them but i've never used docker so yeah :l

thank u tho

I have never used docker either, I've only wrote dockerfiles

do u think a dockerfile might make it work

I do

but I'm quite far away from my computer right now

its fine, thank you for ur help so far

let me know when u have time please

will do

hey @x finally back at my computer after being out all day, got the example app working with a Dockerfile and i have made a PR to the repo.
PR here
working example app here
the Dockerfile in the PR works for the example app, but it may be missing some other things that your actual app may need, but start by applying everything i did in the PR to your actual repo, such as deleteing the Procfile and Nixpacks.toml and making the changes to the railway.json file.
if the Dockerfile provided creates new errors i would be happy to work through them too.

hey brody, thank you very much for taking your time to help me with this, ive merged the pr and will work on making it work with the actual repo. sorry for my late reply, but yeah thank you so much. ill update you and let you know if it all goes well.

sounds good!