Are there any publicly available conda-forge mirrors?

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1

My company is paranoid about somebody violating the Anaconda commercial licensing terms, so it has blocked all access to *.anaconda.com and *.anaconda.org. This, unfortunately, means I can no longer access conda-forge, as it redirects to conda.anaconda.org.

Are there any publicly available mirrors of conda-forge I can use?

2

We host one at https://prefix.dev/conda-forge.

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3

I know of https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge, but it’s has a large latency.

4

If you want one that’s harder to block, you can try out the mirror on the Github container OCI registry :slight_smile:

It only works with pixi at this point in time and still needs some improvements (like storing the repodata in a more compressed fashion) but should work: Global Configuration - Pixi by prefix.dev

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5

Wow, that is cool that Pixi has support for mirrors. As far as I know, conda and mamba do not have such support? Here I mean listing multiple URLs for a channel and falling back to another one if the first one fails, rather than just changing the channel_alias to a different single URL.

6

@wshanks,

I think this is actually possible in conda/mamba when you use the custom_multichannels setting:

custom_multichannels:
  conda-forge:
    - https://prefix.dev/conda-forge
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge

That’s an example based on a couple mirrors listed in this thread.

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@thath Ah, I missed that! I actually can’t find any description for custom_multichannels in the documentation (though it is listed) but it is good to know it exists.

8

Using mirrors seems like a deliberate attempt to circumvent your company’s security policy, so even if their policy is stupid (which it is), they might get upset if they caught you. I can’t believe they would be happy to see you downloading and running software from a Chinese site.

Really they should just block anaconda.com and let anaconda.org through.

You might try reporting bugs to IT every single day until they get sick of you and fix the policy.

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9

I just wanted to update this comment by say that using the custom_multichannels setting is not how to configure mirror usage in conda! I apologize for any confusion this may have caused. There is currently no way to handle this use case in conda.