re-organize nvim lua init (#32)

- leverage lazy-vim's best practice of listing individual plugin config
  lua files under nvim/lua/plugins and let lazy-vim merge those; see:
    https://github.com/folke/lazy.nvim#-structuring-your-plugins
- flatten nvim config folders
- add tree sitter support for better syntax coloring
- add LSP config for lua (requires lua-language-server to be installed)
- add which-key to show possible key bindings after first typed cmd key
- install additional LSP language support via :Mason

.editorconfig

@@ -13,6 +13,6 @@ end_of_line = lf
 [*.{cmd,ps1,csv,doskey}]
 end_of_line = crlf
 
-[*.{sh,yml}]
+[*.{lua,sh,yml}]
 indent_size = 2
 

nvim/.luarc.json

@@ -0,0 +1,4 @@
+{
+    "diagnostics.globals": [
+    ]
+}

nvim/init.lua

@@ -4,14 +4,8 @@
 -- neovim standard paths:
 -- https://neovim.io/doc/user/starting.html#standard-path
 
-local cmd = vim.cmd
-
-require('dotfiles.core.options')
-require('dotfiles.core.keymaps')
-require('dotfiles.lazy-nvim')
-
-cmd[[ colorscheme tokyonight]]
--- cmd[[ colorscheme nord]]
-
-require('dotfiles.plugin-config')
+require('options')
+require('keymaps')
+require('lazy-nvim')
 
+vim.cmd[[ colorscheme tokyonight]]

nvim/lazy-lock.json

@@ -1,17 +1,19 @@
 {
-  "catppuccin": { "branch": "main", "commit": "5e36ca599f4aa41bdd87fbf2c5aae4397ac55074" },
-  "gitsigns.nvim": { "branch": "main", "commit": "4aaacbf5e5e2218fd05eb75703fe9e0f85335803" },
-  "lazy.nvim": { "branch": "main", "commit": "96584866b9c5e998cbae300594d0ccfd0c464627" },
+  "catppuccin": { "branch": "main", "commit": "048c18fc531703815f5e10765ea46ce9b2c75ae4" },
+  "lazy.nvim": { "branch": "main", "commit": "28126922c9b54e35a192ac415788f202c3944c9f" },
   "lualine.nvim": { "branch": "master", "commit": "566b7036f717f3d676362742630518a47f132fff" },
+  "mason-lspconfig.nvim": { "branch": "main", "commit": "3ba1b92b771f33256b4969d696b82c8ae7075364" },
+  "mason.nvim": { "branch": "main", "commit": "9c9416817c9f4e6f333c749327a1ed5355cfab61" },
   "nordtheme": { "branch": "main", "commit": "f13f5dfbb784deddbc1d8195f34dfd9ec73e2295" },
-  "nvim-treesitter": { "branch": "master", "commit": "59d4c14a1a4262cf637ff2420032593afa062749" },
-  "nvim-treesitter-textobjects": { "branch": "master", "commit": "19a91a38b02c1c28c14e0ba468d20ae1423c39b2" },
-  "nvim-web-devicons": { "branch": "master", "commit": "140edfcf25093e8b321d13e154cbce89ee868ca0" },
-  "plenary.nvim": { "branch": "master", "commit": "55d9fe89e33efd26f532ef20223e5f9430c8b0c0" },
+  "nvim-lspconfig": { "branch": "master", "commit": "8917d2c830e04bf944a699b8c41f097621283828" },
+  "nvim-treesitter": { "branch": "master", "commit": "cd4e0909948eb33d3959e133c16f837e4db122c6" },
+  "plenary.nvim": { "branch": "master", "commit": "663246936325062427597964d81d30eaa42ab1e4" },
+  "telescope-ui-select.nvim": { "branch": "master", "commit": "6e51d7da30bd139a6950adf2a47fda6df9fa06d2" },
   "telescope.nvim": { "branch": "master", "commit": "d90956833d7c27e73c621a61f20b29fdb7122709" },
-  "tokyonight.nvim": { "branch": "main", "commit": "f247ee700b569ed43f39320413a13ba9b0aef0db" },
+  "tokyonight.nvim": { "branch": "main", "commit": "67c6050e1ca41260c919236a098ba278472c7520" },
   "vim-commentary": { "branch": "master", "commit": "f67e3e67ea516755005e6cccb178bc8439c6d402" },
-  "vim-fugitive": { "branch": "master", "commit": "59659093581aad2afacedc81f009ed6a4bfad275" },
+  "vim-fugitive": { "branch": "master", "commit": "854a8df0d06b8d3fcb30fa7f2b08c62b553eee3b" },
   "vim-surround": { "branch": "master", "commit": "3d188ed2113431cf8dac77be61b842acb64433d9" },
-  "vim-unimpaired": { "branch": "master", "commit": "6d44a6dc2ec34607c41ec78acf81657248580bf1" }
+  "vim-unimpaired": { "branch": "master", "commit": "6d44a6dc2ec34607c41ec78acf81657248580bf1" },
+  "which-key.nvim": { "branch": "main", "commit": "4433e5ec9a507e5097571ed55c02ea9658fb268a" }
 }

nvim/lua/keymaps.lua

@@ -0,0 +1,13 @@
+-- neovim init file
+-- github.com/davidjenni/dotfiles
+
+local k = vim.keymap
+
+k.set('n', '<leader>h', '<cmd>noh<CR>', { desc = 'Clear highlights' })
+k.set('n', '<c-k>', ':wincmd k<CR>', { desc = 'Move to window above' })
+k.set('n', '<c-j>', ':wincmd j<CR>', { desc = 'Move to window below' })
+k.set('n', '<c-h>', ':wincmd h<CR>', { desc = 'Move to window left' })
+k.set('n', '<c-l>', ':wincmd l<CR>', { desc = 'Move to window right' })
+
+-- plugins set their own keymaps in ~/.config/nvim/lua/plugins/*.lua
+--

nvim/lua/dotfiles/lazy-nvim.lua → nvim/lua/lazy-nvim.lua

@@ -15,5 +15,15 @@ if not vim.loop.fs_stat(lazypath) then
 end
 vim.opt.rtp:prepend(lazypath)
 
-require('lazy').setup('dotfiles.plugins')
+local opts = {
+  -- defaults = {
+  --   lazy = true,
+  -- },
+  install = {
+    colorscheme = { "catppuccin" },
+  },
+}
 
+-- merge and load all .lua files under lua/plugins, see:
+-- https://github.com/folke/lazy.nvim#-structuring-your-plugins
+require("lazy").setup("plugins", opts)

nvim/lua/dotfiles/core/options.lua → nvim/lua/options.lua

@@ -67,3 +67,6 @@ opt.swapfile = false
 opt.hidden = true
 opt.switchbuf = 'useopen'
 
+-- disable folding; see also `set nofoldenable`
+opt.foldlevel = 99
+

nvim/lua/plugins/basics.lua

@@ -0,0 +1,7 @@
+  return {
+    'tpope/vim-commentary',
+    'tpope/vim-fugitive',
+    'tpope/vim-surround',
+    'tpope/vim-unimpaired',
+    { 'nvim-tree/nvim-web-devicons', lazy = true, },
+  }

nvim/lua/plugins/gitsigns.lua

@@ -0,0 +1,14 @@
+return {
+    'lewis6991/gitsigns.nvim',
+    event = { "BufReadPre", "BufNewFile" },
+    opts = {
+      signs = {
+        add = { text = "▎" },
+        change = { text = "▎" },
+        delete = { text = "" },
+        topdelete = { text = "" },
+        changedelete = { text = "▎" },
+        untracked = { text = "▎" },
+      },
+    },
+  }

nvim/lua/plugins/lsp.lua

@@ -0,0 +1,51 @@
+return {
+  {
+    "williamboman/mason.nvim",
+    config = function()
+      require("mason").setup()
+    end
+  },
+
+  {
+    "williamboman/mason-lspconfig.nvim",
+    config = function()
+      require("mason-lspconfig").setup({
+        ensure_installed = { "lua_ls" },
+      })
+    end
+  },
+
+  {
+    -- neodev needs to start before nvim-lspconfig
+    "folke/neodev.nvim",
+    config = function()
+        require("neodev").setup({})
+    end,
+  },
+
+  {
+    "neovim/nvim-lspconfig",
+    dependencies = {
+      "williamboman/mason.nvim",
+      "williamboman/mason-lspconfig.nvim",
+      "j-hui/fidget.nvim",
+      "folke/neodev.nvim",
+    },
+    config = function()
+      local lspconfig = require('lspconfig')
+      lspconfig.lua_ls.setup({})
+
+      vim.keymap.set('n', 'K', vim.lsp.buf.hover, { desc = 'Show info about symbol under cursor'})
+      vim.keymap.set('n', 'gd', vim.lsp.buf.definition, { desc = 'Go to definition' })
+      vim.keymap.set({ 'n', 'v' }, '<leader>ca', vim.lsp.buf.code_action, { desc = 'Show code actions' })
+      vim.keymap.set('n', 'gr', vim.lsp.buf.references, { desc = 'Show references' })
+    end
+  },
+
+  {
+    "j-hui/fidget.nvim",
+    config = function()
+      require("fidget").setup({})
+    end
+  }
+}

nvim/lua/plugins/lualine.lua

@@ -0,0 +1,28 @@
+local config = function()
+  require("lualine").setup({
+    options = {
+      theme = "auto",
+      globalstatus = true,
+      component_separators = { left = "|", right = "|" },
+      section_separators = { left = "", right = "" },
+    },
+    sections = {
+      lualine_a = { "mode" },
+      lualine_b = { "branch", "diff", "diagnostics" },
+      lualine_c = { "filename", "buffers" },
+      lualine_x = { "encoding", "fileformat", "filetype" },
+      lualine_y = { "progress" },
+      lualine_z = { "location", '%B' },
+    },
+    tabline = {},
+  })
+end
+
+return {
+  "nvim-lualine/lualine.nvim",
+  dependencies = {
+    'nvim-tree/nvim-web-devicons'
+  },
+  lazy = false,
+  config = config,
+}

nvim/lua/dotfiles/plugins/editor.lua → nvim/lua/plugins/telescope.lua

@@ -1,25 +1,4 @@
---
--- neovim init file
--- github.com/davidjenni/dotfiles
-
 return {
-  -- gitsigns:
-  {
-    'lewis6991/gitsigns.nvim',
-    event = { "BufReadPre", "BufNewFile" },
-    opts = {
-      signs = {
-        add = { text = "▎" },
-        change = { text = "▎" },
-        delete = { text = "" },
-        topdelete = { text = "" },
-        changedelete = { text = "▎" },
-        untracked = { text = "▎" },
-      },
-    },
-  },
-
-  -- telescope:
   {
     'nvim-telescope/telescope.nvim', tag = '0.1.5',
     dependencies = { 'nvim-lua/plenary.nvim' },
@@ -53,21 +32,37 @@ return {
       { "<leader>sm", "<cmd>Telescope marks<cr>", desc = "Jump to Mark" },
       { "<leader>so", "<cmd>Telescope vim_options<cr>", desc = "Options" },
       { "<leader>sR", "<cmd>Telescope resume<cr>", desc = "Resume" },
-    }
+    },
   },
-
-  -- treesitter:
   {
-      'nvim-treesitter/nvim-treesitter',
-      dependencies = {
-        'nvim-treesitter/nvim-treesitter-textobjects',
-      },
-      build = ":TSUpdate",
-  },
+    "nvim-telescope/telescope-ui-select.nvim",
+    config = function()
+      local telescope = require("telescope")
+      telescope.setup({
+        extensions = {
+          ["ui-select"] = {
+            require("telescope.themes").get_dropdown {
+              -- even more opts
+            }
 
-  -- devicons:
-  {
-    'nvim-tree/nvim-web-devicons',
-    lazy = true,
+            -- pseudo code / specification for writing custom displays, like the one
+            -- for "codeactions"
+            -- specific_opts = {
+            --   [kind] = {
+            --     make_indexed = function(items) -> indexed_items, width,
+            --     make_displayer = function(widths) -> displayer
+            --     make_display = function(displayer) -> function(e)
+            --     make_ordinal = function(e) -> string
+            --   },
+            --   -- for example to disable the custom builtin "codeactions" display
+            --      do the following
+            --   codeactions = false,
+            -- }
+              }
+        }
+      })
+
+      require("telescope").load_extension("ui-select")
+    end
   },
 }