Are :dep crates cached? #182
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When you run :dep in a repl/notebook how are the dependent crates managed? Is it downloaded from scratch every session? Or is it cached somewhere? It seems to take a while to load crates even when they've been loaded in previous repls so I'm guessing the former. It would be nice to cache them in a documented location. |
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Replies: 1 comment 6 replies
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They are rebuild from scratch every session. The source files are cached by cargo though. What location would you suggest caching compiled dependencies? |
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How would you handle cache invalidation then? Using a global location will likely cause the cache to grow forever consuming disk space without being clear to the user. It also wouldn't handle removal of notebooks. |
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The cache should be next to the notebook IMHO. It is up to @davidlattimore to make this decision though. |
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For notebooks that would probably make sense, but maybe be configurable by env variable or something. For repls it would probably have to be opt-in because you don't want to create new cache folders every time you run the repl from a new folder. |
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Evcxr supports using sccache to cache compilation outputs. See setup instructions |
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Ah didn't see that, thanks. |
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They are rebuild from scratch every session. The source files are cached by cargo though. What location would you suggest caching compiled dependencies?