modules: enable devicons in nvim-tree

modules/nvim-tree-lua.nix

@@ -14,6 +14,8 @@ let
   isEmptyVar = name: eq "" (var name);
 in
 {
+  nvim-web-devicons = true;
+
   nvim-tree-lua = (
     [
       (pipe [ (require "nvim-tree") (call "setup" [ configs ]) ])

neovim.nix

@@ -55,9 +55,10 @@ let
     with nix2lua.lib;
     "-- Plugin: ${builtins.trace "Plugin: ${name}" name}\n"
     + (if lib.isString cfg then cfg
-    else if lib.isAttrs cfg then toLua cfg
+    else if lib.isAttrs cfg && cfg ? _type then toLua cfg
     else if lib.isList cfg then toLua (concatLines cfg)
-    else abort "[neovim] mkPluginLuaConfig: unsupported type");
+    else if lib.isBool cfg then "" # Just skip lua config. Only enable the plugin.
+    else abort "[neovim] mkPluginLuaConfig: '${name}' has unsupported type '${builtins.typeOf cfg}'");
   pluginLuaConfigs = lib.mapAttrsToList mkPluginLuaConfig pluginsWithModules;
 
   basicLuaConfigs = map builtins.readFile [ ./config/basic.lua ];