wrappers: add nixvim-print-init package

wrappers/darwin.nix

@@ -28,7 +28,10 @@ in {
   config = mkIf cfg.enable (mkMerge [
     {
       environment.systemPackages =
-        [cfg.finalPackage]
+        [
+          cfg.finalPackage
+          cfg.printInitPackage
+        ]
         ++ (lib.optional cfg.enableMan self.packages.${pkgs.system}.man-docs);
     }
     {

wrappers/hm.nix

@@ -37,7 +37,10 @@ in {
     (mkMerge [
       {
         home.packages =
-          [cfg.finalPackage]
+          [
+            cfg.finalPackage
+            cfg.printInitPackage
+          ]
           ++ (lib.optional cfg.enableMan self.packages.${pkgs.system}.man-docs);
       }
       (mkIf (!cfg.wrapRc) {

wrappers/modules/output.nix

@@ -61,12 +61,26 @@ in {
       readOnly = true;
     };
 
+    initPath = mkOption {
+      type = types.str;
+      description = "The path to the init.lua file";
+      readOnly = true;
+      visible = false;
+    };
+
     initContent = mkOption {
       type = types.str;
       description = "The content of the init.lua file";
       readOnly = true;
       visible = false;
     };
+
+    printInitPackage = mkOption {
+      type = types.package;
+      description = "A tool to show the content of the generated init.lua file.";
+      readOnly = true;
+      visible = false;
+    };
   };
 
   config = let
@@ -110,11 +124,14 @@ in {
       ''
       + config.content;
 
+    init = pkgs.writeText "init.lua" customRC;
+    initPath = toString init;
+
     extraWrapperArgs = builtins.concatStringsSep " " (
       (optional (config.extraPackages != [])
         ''--prefix PATH : "${makeBinPath config.extraPackages}"'')
       ++ (optional config.wrapRc
-        ''--add-flags -u --add-flags "${pkgs.writeText "init.lua" customRC}"'')
+        ''--add-flags -u --add-flags "${init}"'')
     );
 
     wrappedNeovim = pkgs.wrapNeovimUnstable config.package (neovimConfig
@@ -126,6 +143,16 @@ in {
     type = lib.mkForce "lua";
     finalPackage = wrappedNeovim;
     initContent = customRC;
+    inherit initPath;
+
+    printInitPackage = pkgs.writeShellApplication {
+      name = "nixvim-print-init";
+      runtimeInputs = with pkgs; [stylua bat];
+      text = ''
+        stylua - <"${initPath}" | bat --language=lua
+      '';
+    };
+
     extraPlugins =
       if config.wrapRc
       then [config.filesPlugin]

wrappers/nixos.nix

@@ -38,7 +38,10 @@ in {
     (mkMerge [
       {
         environment.systemPackages =
-          [cfg.finalPackage]
+          [
+            cfg.finalPackage
+            cfg.printInitPackage
+          ]
           ++ (lib.optional cfg.enableMan self.packages.${pkgs.system}.man-docs);
       }
       (mkIf (!cfg.wrapRc) {

wrappers/standalone.nix

@@ -33,7 +33,10 @@ in
   pkgs.symlinkJoin {
     name = "nixvim";
     paths =
-      [config.finalPackage]
+      [
+        config.finalPackage
+        config.printInitPackage
+      ]
       ++ pkgs.lib.optional config.enableMan self.packages.${pkgs.system}.man-docs;
     meta.mainProgram = "nvim";
   }