nvim-tree: init plugin

plugins/default.nix

@@ -1,45 +1,46 @@
 {
   imports = [
-    ./bufferlines/bufferline.nix
     ./bufferlines/barbar.nix
+    ./bufferlines/bufferline.nix
 
-    ./colorschemes/gruvbox.nix
-    ./colorschemes/onedark.nix
-    ./colorschemes/one.nix
     ./colorschemes/base16.nix
+    ./colorschemes/gruvbox.nix
+    ./colorschemes/one.nix
+    ./colorschemes/onedark.nix
     ./colorschemes/tokyonight.nix
 
-    ./pluginmanagers/packer.nix
-
-    ./statuslines/lightline.nix
-    ./statuslines/airline.nix
-    ./statuslines/lualine.nix
-
-    ./git/gitgutter.nix
     ./git/fugitive.nix
+    ./git/gitgutter.nix
 
-    ./utils/undotree.nix
-    ./utils/commentary.nix
-    ./utils/comment-nvim.nix
-    ./utils/floaterm.nix
-    ./utils/startify.nix
-    ./utils/goyo.nix
-    ./utils/endwise.nix
-    ./utils/easyescape.nix
-    ./utils/nvim-autopairs.nix
-    ./utils/intellitab.nix
-    ./utils/specs.nix
-    ./utils/mark-radar.nix
-    ./utils/notify.nix
-
-    ./languages/treesitter.nix
-    ./languages/nix.nix
-    ./languages/zig.nix
     ./languages/ledger.nix
+    ./languages/nix.nix
+    ./languages/treesitter.nix
+    ./languages/zig.nix
 
     ./nvim-lsp
     ./nvim-lsp/lspsaga.nix
 
+    ./pluginmanagers/packer.nix
+
+    ./statuslines/airline.nix
+    ./statuslines/lightline.nix
+    ./statuslines/lualine.nix
+
     ./telescope
+
+    ./utils/comment-nvim.nix
+    ./utils/commentary.nix
+    ./utils/easyescape.nix
+    ./utils/endwise.nix
+    ./utils/floaterm.nix
+    ./utils/goyo.nix
+    ./utils/intellitab.nix
+    ./utils/mark-radar.nix
+    ./utils/notify.nix
+    ./utils/nvim-autopairs.nix
+    ./utils/nvim-tree.nix
+    ./utils/specs.nix
+    ./utils/startify.nix
+    ./utils/undotree.nix
   ];
 }

plugins/utils/nvim-tree.nix

@@ -0,0 +1,257 @@
+{ pkgs, config, lib, ... }:
+with lib;
+let
+  cfg = config.programs.nixvim.plugins.nvim-tree;
+  helpers = import ../helpers.nix { lib = lib; };
+in
+{
+  options.programs.nixvim.plugins.nvim-tree = {
+    enable = mkEnableOption "Enable nvim-tree";
+
+    disableNetrw = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Disable netrw";
+    };
+
+    hijackNetrw = mkOption  {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Hijack netrw";
+    };
+
+    openOnSetup = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Open on setup";
+    };
+
+    ignoreFtOnSetup = mkOption {
+      type = types.nullOr (types.listOf types.str);
+      default = null;
+    };
+
+    autoClose = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Automatically close";
+    };
+
+    openOnTab = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+    };
+
+    hijackCursor = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Hijack cursor";
+    };
+
+    updateCwd = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+    };
+
+    updateToBufDir = {
+      enable = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+
+      autoOpen = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+    };
+
+    diagnostics = {
+      enable = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+        description = "Enable diagnostics";
+      };
+
+      icons = let
+        diagnosticOption = desc: mkOption {
+          type = types.nullOr types.str;
+          default = null;
+          description = desc;
+        };
+      in {
+        hint = diagnosticOption "Hints";
+        info = diagnosticOption "Info";
+        warning = diagnosticOption "Warning";
+        error = diagnosticOption "Error";
+      };
+    };
+
+    updateFocusedFile = {
+      enable = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+
+      updateCwd = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+
+      ignoreList = mkOption {
+        type = types.nullOr (types.listOf types.bool);
+        default = null;
+      };
+    };
+
+    systemOpen = {
+      cmd = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+      };
+      args = mkOption {
+        type = types.nullOr (types.listOf types.str);
+        default = null;
+      };
+    };
+
+    git = {
+      enable = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = "Enable git integration";
+      };
+
+      ignore = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+
+      timeout = mkOption {
+        type = types.nullOr types.int;
+        default = null;
+      };
+    };
+
+    filters = {
+      dotfiles = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+      custom = mkOption {
+        type = types.nullOr (types.listOf types.str);
+        default = null;
+      };
+    };
+
+    view = {
+      width = mkOption {
+        type = types.nullOr types.int;
+        default = null;
+      };
+      height = mkOption {
+        type = types.nullOr types.int;
+        default = null;
+      };
+      hideRootFolder = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+      side = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+      };
+      autoResize = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+      mappings = {
+        customOnly = mkOption {
+          type = types.nullOr types.bool;
+          default = null;
+        };
+        list = mkOption {
+          # TODO: Type-check the attrset
+          type = types.nullOr (types.listOf types.attrs);
+          default = null;
+        };
+      };
+      number = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+      relativenumber = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+      signcolumn = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+      };
+    };
+
+    trash = {
+      cmd = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+      };
+      requireConfirm = mkOption {
+        type = types.nullOr types.bool;
+        default = null;
+      };
+    };
+  };
+
+  config = let
+    options = {
+      disable_netrw = cfg.disableNetrw;
+      hijack_netrw = cfg.hijackNetrw;
+      open_on_setup = cfg.openOnSetup;
+      ignore_ft_on_setup = cfg.ignoreFtOnSetup;
+      auto_close = cfg.autoClose;
+      open_on_tab = cfg.openOnTab;
+      hijack_cursor = cfg.hijackCursor;
+      update_cwd = cfg.updateCwd;
+      update_to_buf_dir = {
+        enable = cfg.updateToBufDir.enable;
+        auto_open = cfg.updateToBufDir.autoOpen;
+      };
+      diagnostics = cfg.diagnostics;
+      updateFocusedFile = {
+        enable = cfg.updateFocusedFile.enable;
+        update_cwd = cfg.updateFocusedFile.updateCwd;
+        ignore_list = cfg.updateFocusedFile.ignoreList;
+      };
+      system_open = cfg.systemOpen;
+      filters = cfg.filters;
+      git = cfg.git;
+      view = {
+        width = cfg.view.width;
+        height = cfg.view.height;
+        hide_root_folder = cfg.view.hideRootFolder;
+        side = cfg.view.side;
+        auto_resize = cfg.view.autoResize;
+        mappings = {
+          custom_only = cfg.view.mappings.customOnly;
+          list = cfg.view.mappings.list;
+        };
+        number = cfg.view.number;
+        relativenumber = cfg.view.relativenumber;
+        signcolumn = cfg.view.signcolumn;
+      };
+      trash = {
+        cmd = cfg.trash.cmd;
+        require_confirm = cfg.trash.requireConfirm;
+      };
+    };
+  in mkIf cfg.enable {
+    programs.nixvim = {
+      extraPlugins = with pkgs.vimPlugins; [
+        nvim-tree-lua nvim-web-devicons
+      ];
+
+      extraConfigLua = ''
+        require('nvim-tree').setup(${helpers.toLuaObject options})
+      '';
+    };
+  };
+}