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Is it possible to support multiple upstream caches? #27

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ipetkov opened this issue Oct 15, 2023 · 1 comment
Open

Is it possible to support multiple upstream caches? #27

ipetkov opened this issue Oct 15, 2023 · 1 comment

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@ipetkov
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ipetkov commented Oct 15, 2023 •
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My use case is I have a cachix cache which is set to not cache anything already present in cache.nixos.org. In my builds I'd like for the magic-cache to only contain anything not present in either of my cache or cache.nixos.org, so there is no obviously correct (to me at least) value for which I should set upstream-cache if I only had to pick one
@ipetkov
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ipetkov commented Oct 15, 2023

Did some digging in the magic-nix-cache sources, looks like any new store paths get uploaded which does not take into account whether the upstream cache(s) also include it

https://github.com/DeterminateSystems/magic-nix-cache/blob/a2eb0c6759c08aa7b288708effccf9047a1bb525/magic-nix-cache/src/api.rs#L52-L57

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