Rust-analyzer: fix for missing required capabilities

* set normalizesLineEndings and changeAnnotationSupport.groupsOnLabel = true to work around rust-analyzer incompatibilities

1 files changed, 13 insertions, 1 deletions

diff --git a/lua/lspconfig/rust_analyzer.lua b/lua/lspconfig/rust_analyzer.lua
index 2d545517..12bcfbae 100644
--- a/lua/lspconfig/rust_analyzer.lua
+++ b/lua/lspconfig/rust_analyzer.lua
@@ -1,6 +1,17 @@
 local configs = require 'lspconfig/configs'
 local util = require 'lspconfig/util'
 
+-- neovim doesn't support the full 3.16 spec, but latest rust-analyzer requires the following capabilities.
+-- Remove once implemented.
+local default_capabilities = vim.lsp.protocol.make_client_capabilities()
+default_capabilities.workspace.workspaceEdit = {
+  normalizesLineEndings = true;
+  changeAnnotationSupport = {
+    groupsOnLabel = true;
+  };
+};
+default_capabilities.textDocument.rename.prepareSupportDefaultBehavior = 1;
+
 configs.rust_analyzer = {
   default_config = {
     cmd = {"rust-analyzer"};
@@ -8,7 +19,8 @@ configs.rust_analyzer = {
     root_dir = util.root_pattern("Cargo.toml", "rust-project.json");
     settings = {
       ["rust-analyzer"] = {}
-    }
+    };
+    capabilities = default_capabilities;
   };
   docs = {
     package_json = "https://raw.githubusercontent.com/rust-analyzer/rust-analyzer/master/editors/code/package.json";