Since yesterday (December 15, 2025) the nixos-cuda team cache it’s unreachable when trying to switch a nixos system logging stuff like:
warning: error: unable to download '``https://cache.nixos-cuda.org/mhf691zwwjrqi8b6an14pblyqbzwn1v2.narinfo``': Could not connect to server (7) Failed to connect to ``cache.nixos-cuda.org`` port 443 after 6 ms: Could not connect to server; retrying in 258 ms
Talking via Matrix in the NixOS CUDA some guy tried to reproduce this by running:
❯ curl ``https://cache.nixos-cuda.org/mhf691zwwjrqi8b6an14pblyqbzwn1v2.narinfo`` missed hash⏎
But instead I get:
❯ curl https://cache.nixos-cuda.org/mhf691zwwjrqi8b6an14pblyqbzwn1v2.narinfo curl: (7) Failed to connect to cache.nixos-cuda.org port 443 after 675 ms: Could not connect to server
Running traceroute I get this:
❯ traceroute ``cache.nixos-cuda.org
traceroute to ``hydra.nixos-cuda.org`` (37.27.129.22), 64 hops max
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And obviously it’s not a DNS issue because I’m getting an IP but dig returns:
cache.nixos-cuda.org``. 300 IN CNAME ``hydra.nixos-cuda.org``.
hydra.nixos-cuda.org``. 300 IN A 37.27.129.22
nixos-cuda.org``. 300 IN NS ``helium.ns.hetzner.de``.
nixos-cuda.org``. 300 IN NS ``hydrogen.ns.hetzner.com``.
nixos-cuda.org``. 300 IN NS ``oxygen.ns.hetzner.com``.
They also told me these server it’s located in Hetzner Helsinki, which I’ve tried to see if there was a routing issue from where I am (Argentina) to there using https://hel1-speed.hetzner.com/ but I can reach these no problem. Also tried curling from a mobile phone using mobile data to discard possible network issues with my main PC or my local network, but it’s still unreachable.
