module(helix): Add typos-lsp to all languages' ls, and pass default lang settings via passthru in package

pkgs/helix/package.nix

@@ -4,14 +4,27 @@
   callPackage,
   symlinkJoin,
   makeWrapper,
+  lib,
 }: let
   inherit (inputs.helix.packages."${system}") helix;
+  helixWithPassthru =
+    helix
+    // {
+      passthru =
+        helix.passthru
+        // {
+          languages = lib.pipe "${helix.src}/languages.toml" [
+            builtins.readFile
+            builtins.fromTOML
+          ];
+        };
+    };
   runtime = callPackage ./runtime.nix {};
 in
   symlinkJoin {
     name = "helix-wrapped";
-    paths = [helix];
-    inherit (helix) meta;
+    paths = [helixWithPassthru];
+    inherit (helixWithPassthru) meta;
     buildInputs = [
       makeWrapper
     ];
@@ -19,4 +32,9 @@ in
       wrapProgram $out/bin/hx \
       --set HELIX_RUNTIME ${runtime}
     '';
+    passthru =
+      helixWithPassthru.passthru
+      // {
+        helix-unwrapped = helixWithPassthru;
+      };
   }