nvim-tree: load nvim-tree if openOnSetup

lib/types/plugins.nix

@@ -186,7 +186,12 @@
       keys = mkOption {
         description = "Lazy-load on key mapping";
         default = null;
-        type = nullOr (oneOf [str (listOf lznKeysSpec) (listOf str)]); # TODO: support lz.n.KeysSpec
+        type = nullOr (oneOf [str (listOf lznKeysSpec) (listOf str)]);
+        example = ''
+          keys = [
+            {lhs = "<leader>s"; rhs = ":NvimTreeToggle<cr>"; desc = "Toggle NvimTree"}
+          ]
+        '';
       };
 
       # TODO: enabled, beforeAll, colorscheme, priority, load

modules/plugins/filetree/nvimtree/config.nix

@@ -4,6 +4,7 @@
   pkgs,
   ...
 }: let
+  inherit (builtins) filter;
   inherit (lib.strings) optionalString;
   inherit (lib.modules) mkIf mkMerge;
   inherit (lib.nvim.binds) mkBinding;
@@ -32,7 +33,7 @@ in {
           inherit (cfg) setupOpts;
           cmd = ["NvimTreeClipboard" "NvimTreeClose" "NvimTreeCollapse" "NvimTreeCollapseKeepBuffers" "NvimTreeFindFile" "NvimTreeFindFileToggle" "NvimTreeFocus" "NvimTreeHiTest" "NvimTreeOpen" "NvimTreeRefresh" "NvimTreeResize" "NvimTreeToggle"];
 
-          keys = [
+          keys = filter ({lhs, ...}: lhs != null) [
             (mkNormalBinding cfg.mappings.toggle ":NvimTreeToggle<cr>" mappings.toggle.description)
             (mkNormalBinding cfg.mappings.refresh ":NvimTreeRefresh<cr>" mappings.refresh.description)
             (mkNormalBinding cfg.mappings.findFile ":NvimTreeFindFile<cr>" mappings.findFile.description)
@@ -53,6 +54,7 @@ in {
 
       ${
         optionalString cfg.openOnSetup ''
+          require('lz.n').trigger_load("nvim-tree-lua")
           -- autostart behaviour
           -- Open on startup has been deprecated
           -- see https://github.com/nvim-tree/nvim-tree.lua/wiki/Open-At-Startup

modules/wrapper/lazy/config.nix

@@ -9,7 +9,7 @@
   inherit (lib.generators) mkLuaInline;
   inherit (lib.strings) optionalString;
   inherit (lib.nvim.lua) toLuaObject;
-  inherit (lib.nvim.dag) entryAnywhere;
+  inherit (lib.nvim.dag) entryBefore;
   cfg = config.vim.lazy;
 
   toLuzLznKeySpec = {
@@ -49,7 +49,7 @@ in {
 
     optPlugins = mapAttrsToList (_: plugin: plugin.package) cfg.plugins;
 
-    luaConfigRC.lzn-load = entryAnywhere ''
+    luaConfigRC.lzn-load = entryBefore ["pluginConfigs"] ''
       require('lz.n').load(${toLuaObject lznSpecs})
     '';
   };