Hello Prefect Community, I have an issue while installing the latest version of Orion i.e. "Prefect 2.0a13". I see the error while deploying the ray[default]>=1.9. I am on Python 3.7.6 and running this on the Linux platform. Does anyone have a similar issue? Thanks

Afaik, Orion works best on Python 3.9 and higher because it uses a lot of latest and gratest Python async features etc. Can you try with 3.9?

I could definitely but most of our codebase is on Python 3.7 so we would have to upgrade before we can use Orion. Just wondering if there is no plan to support Python 3.7?

Officially we do support 3.7 😄 the setup.py says:

python_requires=">=3.7",

But personally, I would try to upgrade if possible So maybe it's just an issue with your installation. I'll try to reproduce on 3.7

Sure, let me try

Could it be because you're downloading the packages from Nexus instead of Pypi?

Tried again but not from the nexus but directly with PyPi though same issue

what's your OS? e.g. if you're running it on Ubuntu <= 18.04 it could be that the default Python 3.6 version somehow gets used instead on a newer one

Hey Anna, thanks for coming back. I am working on the RedHat 6 rather Ubuntu

This seems like Ray is the one requiring Python above 3.7. I think Ray should me made as an installation extra. Will check

Hm we install Ray on 3.7 in CI on Linux machines and have no issues.

Hey @Zanie, not sure if I completely got you. But I was using the internal nexus repository before, but I tried changing from nexus to PyPI and still had a similar issue, so I believe it might be something completely different

What’s the output of

pip debug

?

Let me try and run again

And

pip index versions ray

pip index versions ray

Yep you are missing lots of the newer versions. Here’s the output on a simple linux container with 3.7

Also, if I run the pip debug --verbose | grep "cp37-cp37m-manylinux"

Try

pip index versions ray -v -v

— it’ll give you a lot of output. We’ll want to see if the versions are around but don’t have the requisite tags.

Looks like it is getting skipped all the new version

I’d suggest opening an issue on Ray’s github repo with some of this information

So, from the pip debug --verbose, I could see we have "cp37-cp37m-manylinux2010_x86_64" but not 2014

Ah yeah so it seems like your linux version is too old

Cool, I would do that but just wondering if the Ray is really required dependency on the Prefect

No it’s not, we’ll be dropping it from the actual requirements

Wonderful, thanks that would be great as I don't know if Ray would even support the older version of Linux 😉

You can do

pip install --no-dependencies prefect

Wonderful, I would sure do that, thanks for that, I wasn't aware

Then

pip install "aiofiles>=0.7.0" "aiosqlite>=0.17.0" "alembic>=1.7.5" "anyio>=3.2.1" "asgi-lifespan>=1.0" "asyncpg>=0.23" "azure-storage-blob>=12.9.0" "boto3>=1.20.0" "click>=7.1.2" "cloudpickle>=1.5" "coolname>=1.0.4" "croniter>=1.0.1" "cryptography>=36.0.1" "distributed>=2021.8.0" "docker>=4.0" "fastapi>=0.66" "fsspec>=2021.7.0" "google-cloud-storage>=2.1.0" "httpx>=0.18" "kubernetes>=17.17.0" "pendulum>=2.1.2" "pydantic>=1.8.2" "python-slugify>=5.0" "pytz>=2021.1" "pyyaml>=5.1b1" "rich>=10.0" "sqlalchemy[asyncio]>=1.4.20" "toml>=0.10.0" "typer>=0.4.0" "typing_extensions>=3.10.0.1" "uvicorn>=0.14.0"

Thanks, it worked and I can pip install the prefect dependencies manually for now except for Ray

Yep!

👍

Np, sorry it wouldn’t just install properly 😄