feat: add roots option to language-server config

book/src/languages.md

@@ -132,6 +132,7 @@ These are the available options for a language server.
 | `config`                   | Language server initialization options                                                                                            |
 | `timeout`                  | The maximum time a request to the language server may take, in seconds. Defaults to `20`                                          |
 | `environment`              | Any environment variables that will be used when starting the language server `{ "KEY1" = "Value1", "KEY2" = "Value2" }`          |
+| `roots`                    | A set of marker files to look for when trying to find the workspace root. These apply befory `language.roots`                     ga|
 | `required-root-patterns`   | A list of `glob` patterns to look for in the working directory. The language server is started if at least one of them is found.  |
 
 A `format` sub-table within `config` can be used to pass extra formatting options to

helix-core/src/syntax.rs

@@ -461,8 +461,7 @@ where
 #[serde(rename_all = "kebab-case")]
 pub struct LanguageServerConfiguration {
     pub command: String,
-    #[serde(default)]
-    #[serde(skip_serializing_if = "Vec::is_empty")]
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
     pub args: Vec<String>,
     #[serde(default, skip_serializing_if = "HashMap::is_empty")]
     pub environment: HashMap<String, String>,
@@ -470,6 +469,8 @@ pub struct LanguageServerConfiguration {
     pub config: Option<serde_json::Value>,
     #[serde(default = "default_timeout")]
     pub timeout: u64,
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub roots: Vec<String>,
     #[serde(
         default,
         skip_serializing,

helix-lsp/src/lib.rs

@@ -873,11 +873,17 @@ fn start_client(
 ) -> Result<NewClient, StartupError> {
     let (workspace, workspace_is_cwd) = helix_loader::find_workspace();
     let workspace = path::normalize(workspace);
+    let mut roots = config.roots.clone();
+    if !ls_config.roots.is_empty() {
+        let mut ls_roots = ls_config.roots.clone();
+        ls_roots.append(&mut roots);
+        roots = ls_roots;
+    };
     let root = find_lsp_workspace(
         doc_path
             .and_then(|x| x.parent().and_then(|x| x.to_str()))
             .unwrap_or("."),
-        &config.roots,
+        &roots,
         config.workspace_lsp_roots.as_deref().unwrap_or(root_dirs),
         &workspace,
         workspace_is_cwd,

languages.toml

@@ -90,7 +90,7 @@ pkl-lsp = { command = "pkl-lsp" }
 prisma-language-server = { command = "prisma-language-server", args = ["--stdio"] }
 purescript-language-server = { command = "purescript-language-server", args = ["--stdio"] }
 pylsp = { command = "pylsp" }
-pyright = { command = "pyright-langserver", args = ["--stdio"], config = {} }
+pyright = { command = "pyright-langserver", args = ["--stdio"], config = {}, roots = ["pyrightconfig.json"] }
 protols = { command = "protols", args = [] }
 basedpyright = { command = "basedpyright-langserver", args = ["--stdio"], config = {} }
 pylyzer = { command = "pylyzer", args = ["--server"] }
@@ -931,7 +931,7 @@ scope = "source.python"
 injection-regex = "py(thon)?"
 file-types = ["py", "pyi", "py3", "pyw", "ptl", "rpy", "cpy", "ipy", "pyt", { glob = ".python_history" }, { glob = ".pythonstartup" }, { glob = ".pythonrc" }, { glob = "*SConstruct" }, { glob = "*SConscript" }, { glob = "*sconstruct" }]
 shebangs = ["python", "uv"]
-roots = ["pyproject.toml", "setup.py", "poetry.lock", "pyrightconfig.json"]
+roots = ["pyproject.toml", "setup.py", "poetry.lock"]
 comment-token = "#"
 language-servers = ["ruff", "jedi", "pylsp"]
 # TODO: pyls needs utf-8 offsets