# Why does Ray attempt to install ray wheels from ray-wheels.s3-us-west-2.amazonaws.com?

**URL:** <https://discuss.ray.io/t/why-does-ray-attempt-to-install-ray-wheels-from-ray-wheels-s3-us-west-2-amazonaws-com/22236>\
**Category:** Ray Core\
**Created:** [April 7, 2025, 8:19am UTC](https://discuss.ray.io/t/why-does-ray-attempt-to-install-ray-wheels-from-ray-wheels-s3-us-west-2-amazonaws-com/22236 "2025-04-07T08:19:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Martin\_Studer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/martin_studer/32/7854_2.png) [@Martin\_Studer](https://discuss.ray.io/u/Martin_Studer)\
**Post date:** [April 7, 2025, 8:19am UTC](https://discuss.ray.io/t/why-does-ray-attempt-to-install-ray-wheels-from-ray-wheels-s3-us-west-2-amazonaws-com/22236/1 "2025-04-07T08:19:34Z")

</div>

**1. Severity of the issue: (select one)**  
 None: I’m just curious or want clarification.  
 Low: Annoying but doesn’t hinder my work.  
 Medium: Significantly affects my productivity but can find a workaround.  
 High: Completely blocks me.

**2. Environment:**

- Ray version: 2.20.0
- Python version: 3.11.9
- OS: Ubuntu 22.04.5 LTS
- Cloud/Infrastructure: Azure
- Other libs/tools (if relevant): conda

**3. What happened vs. what you expected:**

- Expected: Ray installs ray wheel from custom Python package index (Artifactory)
- Actual: Ray ignores pip configuration and attempts to install ray from [ray-wheels.s3-us-west-2.amazonaws.com](http://ray-wheels.s3-us-west-2.amazonaws.com)

For full transparency: I already posted this question on [SO](https://stackoverflow.com/questions/79559259/why-does-ray-attempt-to-install-ray-wheels-from-ray-wheels-s3-us-west-2-amazonaw) before I learned about the existence of this forum.

When submitting a Ray job using a conda runtime env (`runtime_env = {"conda": "environment.yml"}`), Ray attempts to install the `ray` wheel from `ray-wheels.s3-us-west-2.amazonaws.com` even when I configure pip to use a different Python package index (`--index-url`). Example `environment.yml`:

```auto
name: test
channels:
  - https://conda.anaconda.org/conda-forge/
  - nodefaults

dependencies:
  - pandas=2.2.3
  - pip
  - pip:
      - --index-url https://artifactory.company.com/artifactory/api/pypi/pypi-remote/simple/
      - ray==2.20.0

```

Ray seems to ignore the provided configuration and attempt to install the `ray` wheel from `ray-wheels.s3-us-west-2.amazonaws.com`. Is there a configuration setting to change this behavior or how can `ray` be installed from a custom Python package index without having to go out to the Internet?