feat: command-free build

Cargo.toml

@@ -9,6 +9,10 @@ license = "Apache-2.0"
 path = "src/ruby.rs"
 crate-type = ["cdylib"]
 
+[features]
+default = []
+command_api = []
+
 [dependencies]
 regex = "1.11.1"
 serde_json = "1.0"

README.md

@@ -1,3 +1,27 @@
 # Ruby extension for Zed
 
 [Documentation](https://zed.dev/docs/languages/ruby)
+
+## Command-free LSP build
+
+The default build does not run extension-side process commands for Ruby LSP
+startup. It uses configured `lsp.<server>.binary.path` values first, then falls
+back to `worktree.which`. If `use_bundler` is enabled, it launches through
+`bundle exec <server>` without probing Bundler.
+
+```sh
+cargo test
+```
+
+To enable the command API path for project gem detection and extension-managed
+language server/debug gem installation, build with:
+
+```sh
+cargo test --features command_api
+```
+
+This is not a replacement for fixing Zed's command spawning behavior:
+https://github.com/zed-industries/zed/issues/57170. The command-free profile
+expects `bundle` or the language server executable to be available from the
+project environment. Debugging expects `rdbg` to be available from that same
+environment.

src/command_executor.rs

@@ -26,9 +26,11 @@ pub trait CommandExecutor {
 
 /// An implementation of `CommandExecutor` that executes commands
 /// using the `zed_extension_api::Command`.
+#[cfg(feature = "command_api")]
 #[derive(Clone)]
 pub struct RealCommandExecutor;
 
+#[cfg(feature = "command_api")]
 impl CommandExecutor for RealCommandExecutor {
     fn execute(
         &self,

src/language_servers/kanayago.rs

@@ -7,6 +7,10 @@ impl LanguageServer for Kanayago {
     const EXECUTABLE_NAME: &str = "kanayago";
     const GEM_NAME: &str = "kanayago";
 
+    fn default_use_bundler() -> bool {
+        false
+    }
+
     fn get_executable_args<T: WorktreeLike>(&self, _worktree: &T) -> Vec<String> {
         vec!["--lsp".to_string()]
     }
@@ -39,4 +43,9 @@ mod tests {
 
         assert_eq!(kanayago.get_executable_args(&mock_worktree), vec!["--lsp"]);
     }
+
+    #[test]
+    fn test_default_use_bundler() {
+        assert!(!Kanayago::default_use_bundler());
+    }
 }