add ocaml lsp support (#5230)

packages/opencode/src/lsp/language.ts

@@ -103,6 +103,8 @@ export const LANGUAGE_EXTENSIONS: Record<string, string> = {
   ".zig": "zig",
   ".zon": "zig",
   ".astro": "astro",
+  ".ml": "ocaml",
+  ".mli": "ocaml",
   ".tf": "terraform",
   ".tfvars": "terraform-vars",
   ".hcl": "hcl",

packages/opencode/src/lsp/server.ts

@@ -1185,6 +1185,23 @@ export namespace LSPServer {
     },
   }
 
+  export const Ocaml: Info = {
+    id: "ocaml-lsp",
+    extensions: [".ml", ".mli"],
+    root: NearestRoot(["dune-project", "dune-workspace", ".merlin", "opam"]),
+    async spawn(root) {
+      const bin = Bun.which("ocamllsp")
+      if (!bin) {
+        log.info("ocamllsp not found, please install ocaml-lsp-server")
+        return
+      }
+      return {
+        process: spawn(bin, {
+          cwd: root,
+        }),
+      }
+    },
+  }
   export const BashLS: Info = {
     id: "bash",
     extensions: [".sh", ".bash", ".zsh", ".ksh"],