[Neovim] Use vim.pack

I don't use most of what [lazy.nvim] has to offer, so now that Neovim
has a builtin plugin manager (`vim.pack`), I figured I'd check it out.

For the most part this is a 1:1 translation from [lazy.nvim] to
`vim.pack`. There are, however, a few deviations of note. In a few
instances, the config is being updated to bring it in line with the
current state of the plugin. The requirements.txt plugin is no longer
needed because Neovim handles the syntax itself. Neorg requires
luarocks; this is handled automatically by [lazy.nvim], but not
`vim.pack`. Rather than creating song long complicated way to handle
this myself, I'm switching to [obsidian.nvim], specifically a fork that
supports using [snacks.nvim] as the picker. While I don't use Obsidian
itself, I can leverage the plugin for notes and todos, all with standard
Markdown syntax.

[lazy.nvim]: https://github.com/folke/lazy.nvim
[obsidian.nvim]: https://github.com/obsidian-nvim/obsidian.nvim
[snacks.nvim]: https://github.com/folke/snacks.nvim

Author: dirn

.config/nvim/ftplugin/markdown.lua

@@ -0,0 +1,2 @@
+-- Let markdown hide text and show symbols and labels in its place.
+vim.o.conceallevel = 2

.config/nvim/ftplugin/norg.lua

@@ -1,9 +1,6 @@
 -- Set the leader first so that any plugins providing mappings will pick it up.
 vim.g.mapleader = [[ ]]
 
--- Install plugins.
-require("dirn.plugins")
-
 -- Initialize file types.
 require("dirn.filetypes")
 

.config/nvim/init.lua

@@ -99,17 +99,9 @@ local function plugins()
     opts = { position = "center", hl = "Comment" },
   }
 
-  local ok, lazy = pcall(require, "lazy")
-  if not ok then
-    return { opts }
-  end
-
   vim.api.nvim_create_autocmd({ "User" }, {
     pattern = { "AlphaReady" },
     callback = function()
-      vim.keymap.set("n", "L", function()
-        vim.cmd.Lazy()
-      end, { silent = true, noremap = true, buffer = true })
       local ok, _ = pcall(require, "mason")
       if ok then
         vim.keymap.set("n", "M", function()
@@ -119,17 +111,28 @@ local function plugins()
     end,
   })
 
-  local stats = lazy.stats()
-  local loaded = tostring(stats.loaded)
-  if stats.loaded == stats.count then
-    loaded = "All"
-  end
+  local all = vim.pack.get()
+  if #all > 0 then
+    local total = #all
 
-  opts.val = "You are using "
-    .. stats.count
-    .. " plugins, "
-    .. loaded
-    .. " of them are loaded. Open [L]azy to see more."
+    local active = vim
+      .iter(all)
+      :filter(function(x)
+        return x.active
+      end)
+      :totable()
+
+    local loaded = "All"
+    if total ~= #active then
+      loaded = tostring(#active)
+    end
+
+    opts.val = "You are using "
+      .. total
+      .. " plugins. "
+      .. loaded
+      .. " of them are loaded."
+  end
 
   return { opts }
 end

.config/nvim/lazy-lock.json

@@ -1,28 +1,3 @@
-local has_mason, mason = pcall(require, "mason")
-if not has_mason then
-  return
-end
-
-local has_installer, installer = pcall(require, "mason-tool-installer")
-if not has_installer then
-  return
-end
-
-mason.setup()
-installer.setup({
-  ensure_installed = {
-    "diagnosticls",
-    "lua-language-server",
-    "mypy",
-    "prettier",
-    "ruff",
-    "rust-analyzer",
-    "stylua",
-    "ty",
-    "yamllint",
-  },
-})
-
 local servers = {
   "diagnosticls",
   "lua_ls",
@@ -36,8 +11,6 @@ if has_lspextras then
   vim.list_extend(servers, lspextras)
 end
 
-vim.lsp.enable(servers)
-
 vim.api.nvim_create_autocmd("LspAttach", {
   desc = "Configure the buffer's capabilities.",
   callback = function(args)