[Nix-dev] Travis false-positives

[Rob Vermaas]

Hi,


> Isn't travis a special case for the dynamic cache? It only runs 2 jobs at
> most and only when a PR comes in or a commit is done. Basically it's an
> extension of Hydra except that it builds PRs and doesn't save build
> products...
> Seems to me that it is fine for it to use the dynamic binary cache...
>

Indeed. The amount of pulls from hydra.nixos.org from Travis is pretty
limited, so it is ok to use for this. We just don't want a large group of
people using it continuously, as the binary cache of hydra.nixos.org only
generates nars on-the-fly, and it has no caching of these nars, so they put
a significant load on the main Hydra machine, which is already under heavy
CPU and IO pressure.

Cheers,
Rob
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