POC: formatted Lua configuration

modules/plugins/languages/dart/config.nix

@@ -39,7 +39,6 @@ in {
 
     (mkIf cfg.lsp.enable {
       vim.lsp.lspconfig.enable = true;
-
       vim.lsp.lspconfig.sources.dart-lsp = servers.${cfg.lsp.server}.lspConfig;
     })
 
@@ -52,12 +51,12 @@ in {
       vim.luaConfigRC.flutter-tools = entryAnywhere ''
         require('flutter-tools').setup {
           lsp = {
-            color = { -- show the derived colours for dart variables
-              enabled = ${boolToString ftcfg.color.enable}, -- whether or not to highlight color variables at all, only supported on flutter >= 2.10
-              background = ${boolToString ftcfg.color.highlightBackground}, -- highlight the background
-              foreground = ${boolToString ftcfg.color.highlightForeground}, -- highlight the foreground
-              virtual_text = ${boolToString ftcfg.color.virtualText.enable}, -- show the highlight using virtual text
-              virtual_text_str = ${ftcfg.color.virtualText.character} -- the virtual text character to highlight
+            color = {
+              enabled = ${boolToString ftcfg.color.enable},
+              background = ${boolToString ftcfg.color.highlightBackground},
+              foreground = ${boolToString ftcfg.color.highlightForeground},
+              virtual_text = ${boolToString ftcfg.color.virtualText.enable},
+              virtual_text_str = ${toString ftcfg.color.virtualText.character}
             },
 
             capabilities = capabilities,

modules/plugins/languages/dart/dart.nix

@@ -105,7 +105,7 @@ in {
 
           character = mkOption {
             type = str;
-            default = "■";
+            default = "...";
             description = "Virtual text character to highlight";
           };
         };

modules/wrapper/rc/config.nix

@@ -1,5 +1,6 @@
 {
   config,
+  pkgs,
   lib,
   ...
 }: let
@@ -128,6 +129,24 @@ in {
         else abort ("Dependency cycle in ${name}: " + toJSON sortedDag);
     in
       result;
+
+    formatLua = {
+      name,
+      contents,
+      ...
+    }:
+      pkgs.runCommand name {inherit contents;} ''
+        touch $out
+        echo -n "$text" > "$out"
+
+        ${pkgs.stylua}/bin/stylua \
+          --column-width 80 \
+          --no-editorconfig \
+          --indent-type Spaces \
+          --indent-width 4 \
+          --collapse-simple-statement Never \
+          "$out"
+      '';
   in {
     vim = {
       configRC = {
@@ -138,8 +157,11 @@ in {
         luaScript = let
           mapResult = result: (wrapLuaConfig {
             luaBefore = "${cfg.luaConfigPre}";
-            luaConfig = concatStringsSep "\n" (map mkLuarcSection result);
             luaAfter = "${cfg.luaConfigPost}";
+            luaConfig = formatLua {
+              name = "lua";
+              contents = concatStringsSep "\n" (map mkLuarcSection result);
+            };
           });
 
           luaConfig = resolveDag {