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# Description This allows plugins to report their version (and potentially other metadata in the future). The version is shown in `plugin list` and in `version`. The metadata is stored in the registry file, and reflects whatever was retrieved on `plugin add`, not necessarily the running binary. This can help you to diagnose if there's some kind of mismatch with what you expect. We could potentially use this functionality to show a warning or error if a plugin being run does not have the same version as what was in the cache file, suggesting `plugin add` be run again, but I haven't done that at this point. It is optional, and it requires the plugin author to make some code changes if they want to provide it, since I can't automatically determine the version of the calling crate or anything tricky like that to do it. Example: ``` > plugin list | select name version is_running pid ╭───┬────────────────┬─────────┬────────────┬─────╮ │ # │ name │ version │ is_running │ pid │ ├───┼────────────────┼─────────┼────────────┼─────┤ │ 0 │ example │ 0.93.1 │ false │ │ │ 1 │ gstat │ 0.93.1 │ false │ │ │ 2 │ inc │ 0.93.1 │ false │ │ │ 3 │ python_example │ 0.1.0 │ false │ │ ╰───┴────────────────┴─────────┴────────────┴─────╯ ``` cc @maxim-uvarov (he asked for it) # User-Facing Changes - `plugin list` gets a `version` column - `version` shows plugin versions when available - plugin authors *should* add `fn metadata()` to their `impl Plugin`, but don't have to # Tests + Formatting Tested the low level stuff and also the `plugin list` column. # After Submitting - [ ] update plugin guide docs - [ ] update plugin protocol docs (`Metadata` call & response) - [ ] update plugin template (`fn metadata()` should be easy) - [ ] release notes |
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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.