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c15335c8b0
Add Cargo-style project discovery for Buck and Bazel Users This feature requires the user to add a command that generates a `rust-project.json` from a set of files. Project discovery can be invoked in two ways: 1. At extension activation time, which includes the generated `rust-project.json` as part of the linkedProjects argument in `InitializeParams`. 2. Through a new command titled "rust-analyzer: Add current file to workspace", which makes use of a new, rust-analyzer-specific LSP request that adds the workspace without erasing any existing workspaces. Note that there is no mechanism to _remove_ workspaces other than "quit the rust-analyzer server". Few notes: - I think that the command-running functionality _could_ merit being placed into its own extension (and expose it via extension contribution points) to provide build-system idiomatic progress reporting and status handling, but I haven't (yet) made an extension that does this nor does Buck expose this sort of functionality. - This approach would _just work_ for Bazel. I'll try and get the tool that's responsible for Buck integration open-sourced soon. - On the testing side of things, I've used this in around my employer's Buck-powered monorepo and it's a nice experience. That being said, I can't think of an open-source repository where this can be tested in public, so you might need to trust me on this one. I'd love to get feedback on: - Naming of LSP extensions/new commands. I'm not too pleased with how "rust-analyzer: Add current file to workspace" is named, in that it's creating a _new_ workspace. I think that this command being added should be gated on `rust-analyzer.discoverProjectCommand` on being set, so I can add this in sequent commits. - My Typescript. It's not particularly good. - Suggestions on handling folders with _both_ Cargo and non-Cargo build systems and if I make activation a bit better. (I previously tried to add this functionality entirely within rust-analyzer-the-LSP server itself, but matklad was right—an extension side approach is much, much easier.) |
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