# 'cuda' jobset deleted on hydra.nix-community.org?
**URL:** https://discourse.nixos.org/t/cuda-jobset-deleted-on-hydra-nix-community-org/72198
**Category:** Help
**Created:** [November 16, 2025, 9:16pm UTC](https://discourse.nixos.org/t/cuda-jobset-deleted-on-hydra-nix-community-org/72198 "2025-11-16T21:16:39Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@UlyssesZhan](https://discourse.nixos.org/u/UlyssesZhan)
#### Post date: [November 16, 2025, 9:16pm UTC](https://discourse.nixos.org/t/cuda-jobset-deleted-on-hydra-nix-community-org/72198/1 "2025-11-16T21:16:39Z")
The ‘cuda’ jobset is [no longer listed on the website](https://web.archive.org/web/diff/20251008171150/20251116210929/https://nix-community.org/package-sets/). Jobs previously in the ‘cuda’ jobset is now showing 404 on the Hydra [website](https://hydra.nix-community.org/job/nixpkgs/cuda/thunderbird.x86_64-linux).
Where can I find a binary cache for Thunderbird with CUDA enabled now?
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### Author:  [@waffle8946](https://discourse.nixos.org/u/waffle8946)
#### Post date: [November 16, 2025, 9:20pm UTC](https://discourse.nixos.org/t/cuda-jobset-deleted-on-hydra-nix-community-org/72198/2 "2025-11-16T21:20:14Z")
>
>
> \> Where has it moved?
>
> To https://nixos-cuda.org.
> Hydra: https://hydra.nixos-…cuda.org
> **[NixOS CUDA Team](https://nixos-cuda.org/)**
>
> Landing page for the NixOS CUDA maintainers team.
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### Author:  [@basnijholt](https://discourse.nixos.org/u/basnijholt)
#### Post date: [November 30, 2025, 5:38pm UTC](https://discourse.nixos.org/t/cuda-jobset-deleted-on-hydra-nix-community-org/72198/3 "2025-11-30T17:38:03Z")
Thunderbird compiling from source was one of the packages that caused me the most pain - alongside PyTorch with CUDA. Multi-hour builds that would sometimes OOM and crash my system.
Two solutions that helped me:
1. **Switch to `thunderbird-bin` and `firefox-bin`** - these just unpack the official Mozilla binaries, so no compilation needed. Much faster and just as functional.
2. **Use the new CUDA cache URL** - the official cache moved to `https://cache.nixos-cuda.org/`. Here’s my [cache configuration](https://github.com/basnijholt/dotfiles/blob/01701d5a435fec078eae0d25ee98b770ee5280a8/configs/nixos/common/nix.nix).
I also ended up building a local Harmonia cache server for my fleet, which I wrote about [here](https://www.nijho.lt/post/nixos-cache/), but the `-bin` variants solved the Thunderbird/Firefox problem immediately.