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Re: Providing/Submitting substitutes

From: Tobias Geerinckx-Rice
Subject: Re: Providing/Submitting substitutes
Date: Thu, 16 Dec 2021 16:42:35 +0100


phodina via 写道:
However, since I already built the browser and it took several hours
I'd like to provide it also to other people.

That's very considerate of you.  Thank you!

Is there a way to submit the outputs of derivation to the official
substitution server or the only way would be to make public my
substitution server?

I'm afraid so (the latter). As you mention, this would require trusting the other party but to an unreasonably degree: the ability to redistribute arbitrary binaries, signed by the project, to all Guix users.

That said, if your substitution server has decent uptime, traffic, and a public IP, nothing's stopping you from putting up a disclaimer page (like… or better) and serving your substitutes to others.

Adding the guix publish service is trivial, about as much work as typing ‘guix archive --export’ once, and is a one-time effort!


Correct me if I'm wrong but can't this be solved be verified by
using guix challenge?

In this case, I don't see how. Guix challenge is a valuable tool but to use it in this way requires a fundamentally trusted party (e.g., you, or say, to be distributing their own independently-built copy.

If that were the case you wouldn't have had to build it yourself. So it could be used after the fact, or for general ‘hm, this is interesting’ flagging for further research, and that's not good enough here. Copies would have been distributed by then.

Challenges between 2 supposedly independent unofficial substitute providers would be quite vulnerable to various kinds of subversion.

Kind regards,


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