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e20113a0eb
# Description In order for `Stack::unwrap_unique` to work as intended, we currently manually track all references to the parent stack and ensure that they are cleared before calling `Stack::unwrap_unique` in the REPL. We also only call `Stack::unwrap_unique` after all code from the current REPL entry has finished executing. Since `Value`s cannot store `Stack` references, then this should have worked in theory. However, we forgot to account for threads. `run-external` (and maybe the plugin writers) can spawn threads that clone the `Stack`, holding on to references of the parent stack. These threads are not waited/joined upon, and so may finish after the eval has already returned. This PR removes the `Stack::unwrap_unique` function and associated debug assert that was [causing panics](https://gist.github.com/cablehead/f3d2608a1629e607c2d75290829354f7) like @cablehead found. # After Submitting Make values cheaper to clone as a more robust solution to the performance issues with cloning the stack. --------- Co-authored-by: Wind <WindSoilder@outlook.com> |
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nu-protocol
The nu-protocol crate holds the definitions of structs/traits that are used throughout Nushell. This gives us one way to expose them to many other crates, as well as make these definitions available to each other, without causing mutually recursive dependencies.