diff --git a/lib/types/default.nix b/lib/types/default.nix
index bfaa38da..98f18417 100644
--- a/lib/types/default.nix
+++ b/lib/types/default.nix
@@ -5,5 +5,5 @@
 in {
   inherit (typesDag) dagOf;
   inherit (typesPlugin) pluginsOpt extraPluginType;
-  inherit (typesLanguage) diagnostics mkGrammarOption;
+  inherit (typesLanguage) diagnostics mkGrammarOption listArgs;
 }
diff --git a/lib/types/languages.nix b/lib/types/languages.nix
index 7ef004e8..233d53ca 100644
--- a/lib/types/languages.nix
+++ b/lib/types/languages.nix
@@ -34,4 +34,9 @@ in {
     if builtins.isString v
     then v
     else lib.getExe v;
+
+  # convert a list of user's LSP args into a list of strings concatenated with commas
+  # for example:
+  #   ["--foo" "--bar"] -> "--foo", "--bar"
+  listArgs = args: builtins.concatStringsSep ", " (map (s: "\"${s}\"") args);
 }