nvim: Add file tree

In addition to my standard file manager, vifm, being integrated into
neovim, I have now also added a side-pane file tree (akin to nerdtree)
that is easily reachable to get a quick overview of a file layout.

For now, I do not intend to do much more with the plugin, only keep it
for those rare cases I want to have a view on my file layout at the same
time as working in a buffer. For all other things (file operations
especially) I still have vifm.

nvim/.config/nvim/lazy-lock.json

@@ -49,11 +49,13 @@
   "nvim-notify": { "branch": "master", "commit": "bdd647f61a05c9b8a57c83b78341a0690e9c29d7" },
   "nvim-surround": { "branch": "main", "commit": "b98862527c4727c171f8626e04d8ae88ef6cb736" },
   "nvim-toggleterm.lua": { "branch": "main", "commit": "a5638b2206c3930a16a24e5c184dddd572f8cd34" },
+  "nvim-tree.lua": { "branch": "master", "commit": "aa9971768a08caa4f10f94ab84e48d2ceb30b1c0" },
   "nvim-treesitter": { "branch": "master", "commit": "c38646edf2bdfac157ca619697ecad9ea87fd469" },
   "nvim-treesitter-context": { "branch": "master", "commit": "88d1627285f7477883516ef60521601862dae7a1" },
   "nvim-treesitter-textsubjects": { "branch": "master", "commit": "b913508f503527ff540f7fe2dcf1bf1d1f259887" },
   "nvim-ts-context-commentstring": { "branch": "main", "commit": "729d83ecb990dc2b30272833c213cc6d49ed5214" },
   "nvim-ts-rainbow2": { "branch": "master", "commit": "cee4601ff8aac73dee4afa1074814343bb5a0b80" },
+  "nvim-web-devicons": { "branch": "master", "commit": "95b1e300699be8eb6b5be1758a9d4d69fe93cc7f" },
   "otter.nvim": { "branch": "main", "commit": "cfb548957aed403d9838febd7223595d47b32031" },
   "playground": { "branch": "master", "commit": "4044b53c4d4fcd7a78eae20b8627f78ce7dc6f56" },
   "plenary.nvim": { "branch": "master", "commit": "253d34830709d690f013daf2853a9d21ad7accab" },

nvim/.config/nvim/lua/maps.lua

@@ -211,6 +211,10 @@ map('n', '<leader>ss', ":lua MiniStarter.open()<cr>", { desc = 'show startpage'
 map('n', '<leader>so', '<cmd>SymbolsOutline<cr>',
     { silent = true, desc = 'toggle symbol outline' })
 
+-- PLUGIN: nvim-tree
+map('n', '<leader>se', '<cmd>NvimTreeToggle<cr>',
+    { silent = true, desc = 'toggle filetree' })
+
 -- PLUGIN: easy-align
 -- Start interactive EasyAlign in visual mode (e.g. vipga)
 map('x', 'ga', '<Plug>(EasyAlign)')

nvim/.config/nvim/lua/plugins.lua

@@ -1,18 +1,24 @@
 local writing_ft = { "quarto", "pandoc", "markdown", "text", "tex" }
 
 return {
-    -- vim plugs
     -- essential
     { 'numToStr/Navigator.nvim',           branch = "master", config = true }, -- allow seamless navigation between vim buffers and tmux/wezterm splits
     { 'jeffkreeftmeijer/vim-numbertoggle', event = "BufEnter" },               -- toggles numbers to absolute for all buffers but the current which is relative
     { 'ojroques/vim-oscyank',              event = "VeryLazy" },               -- yank from *anywhere* (even ssh session) to clipboard, using :OSCYank
     { 'ggandor/lightspeed.nvim',           event = "VeryLazy" },               -- jump between letters with improved fFtT quicksearch, mimics sneak
-    -- files
-    { 'vifm/vifm.vim' },                                                       -- integrate file manager
     {
         'lewis6991/gitsigns.nvim',                                             -- show vcs changes on left-hand gutter
         opts = { numhl = true, signcolumn = false },
         event = "BufRead"
+    },
+    -- files
+    { 'vifm/vifm.vim' },                           -- integrate file manager
+    {
+        'nvim-tree/nvim-tree.lua',                 -- integrate file tree
+        config = true,
+        dependencies = { 'nvim-tree/nvim-web-devicons', config = true },
+        cmd = "NvimTreeToggle"
+    },
     }, {
     'RRethy/nvim-base16',
     event = "BufWinEnter",
@@ -66,7 +72,7 @@ return {
 }, { 'edKotinsky/Arduino.nvim', ft = 'arduino', config = true }, -- statusline
     {
         'nvim-lualine/lualine.nvim',
-        requires = { 'kyazdani42/nvim-web-devicons', opt = true },
+        requires = { 'nvim-tree/nvim-web-devicons', config = true },
         config = function() require('plug._lualine') end
     }, -- writing
     { 'vim-pandoc/vim-criticmarkup', ft = writing_ft }, {
@@ -136,7 +142,7 @@ return {
             vim.g.magma_image_provider = "kitty"
             vim.g.magma_automatically_open_output = false
         end
-    }, -- nvim plugs
+    },
     {
         'echasnovski/mini.nvim',
         version = '*',