plugins/lsp: add r_language_server

Author: BeaudanBrown

plugins/lsp/language-servers/default.nix

@@ -443,6 +443,12 @@ let
       name = "pyright";
       description = "pyright for Python";
     }
+    {
+      name = "r-language-server";
+      description = "languageserver for R";
+      package = pkgs.rPackages.languageserver;
+      serverName = "r_language_server";
+    }
     {
       name = "rnix-lsp";
       description = "rnix LSP for Nix";

tests/test-sources/plugins/lsp/_lsp.nix

@@ -174,6 +174,7 @@
             pylsp.enable = true;
             pylyzer.enable = true;
             pyright.enable = true;
+            r-language-server.enable = true;
             ruby-lsp.enable = true;
             ruff.enable = true;
             ruff-lsp.enable = true;