this post was submitted on 31 Jul 2026
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Nix / NixOS

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Running nix on an IPv6-only host fails to instantiate nuggets and jekyll-tagging. (feddit.org)
submitted 3 days ago by libewa@feddit.org to c/nix@programming.dev
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It's these two gems, specifically. I can build them on my local machine, and nix copy them to the server, but building them directly on the server always fails with curl: (6) Could not resolve host: rubygems.org. (If you want to replicate it: nix build https://codeberg.org/libewa/pages/archive/main.tar.gz.)

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[–] moonpiedumplings@programming.dev 1 points 3 days ago (1 children)

Could it be that rubygems does not support ipv6?

Some sites, even big sites don't support it: https://areweipv6yet.com/

According to the above, Github doesn't properly support it yet.

[–] libewa@feddit.org 1 points 2 days ago (1 children)

What do I do now? For GitHub, there‘s gh-v6.com, is there anything similar for RubyGems?

[–] moonpiedumplings@programming.dev 1 points 2 days ago

Idk..

Maybe you can use a VPN that acts a public ipv4 address so you can get to ipv4 only stuff reliably?

or you can use one of the public free 6to4 gateways?