feat(treesitter): use community fork provisioner

lua/plugins/treesitter.lua

@@ -0,0 +1,90 @@
+local treesitter_languages = require("config.treesitter_languages")
+
+local function tree_sitter_cli_works()
+  if vim.fn.executable("tree-sitter") == 0 then
+    return false
+  end
+
+  local result = vim.system({ "tree-sitter", "--version" }, { text = true }):wait()
+  return result.code == 0
+end
+
+local function ensure_tree_sitter_cli(callback)
+  if tree_sitter_cli_works() then
+    callback()
+    return
+  end
+
+  if #vim.api.nvim_list_uis() == 0 then
+    return
+  end
+
+  local mason_ok, mason = pcall(require, "mason")
+  local registry_ok, registry = pcall(require, "mason-registry")
+  if not mason_ok or not registry_ok then
+    vim.notify_once("tree-sitter CLI is required to install Treesitter parsers", vim.log.levels.WARN)
+    return
+  end
+
+  mason.setup()
+  registry.refresh(function()
+    local package_ok, package = pcall(registry.get_package, "tree-sitter-cli")
+    if not package_ok then
+      vim.notify_once("Mason registry does not include tree-sitter-cli", vim.log.levels.WARN)
+      return
+    end
+
+    if package:is_installed() then
+      if tree_sitter_cli_works() then
+        callback()
+      else
+        vim.notify_once("tree-sitter CLI is installed but cannot run", vim.log.levels.WARN)
+      end
+      return
+    end
+
+    if package:is_installing() then
+      return
+    end
+
+    package:install({}, function(success, error)
+      if success and tree_sitter_cli_works() then
+        callback()
+      else
+        vim.notify("Failed to install tree-sitter-cli with Mason: " .. tostring(error), vim.log.levels.WARN)
+      end
+    end)
+  end)
+end
+
+return {
+  {
+    "neovim-treesitter/nvim-treesitter",
+    name = "neovim-treesitter",
+    dependencies = {
+      "neovim-treesitter/treesitter-parser-registry",
+      "williamboman/mason.nvim",
+    },
+    lazy = false,
+    build = ":TSUpdate",
+    config = function()
+      local treesitter = require("nvim-treesitter")
+      treesitter.setup()
+
+      local installed = treesitter.get_installed("parsers")
+      local missing = vim.iter(treesitter_languages.install_parsers)
+          :filter(function(parser)
+            return not vim.tbl_contains(installed, parser)
+          end)
+          :totable()
+
+      if #missing == 0 then
+        return
+      end
+
+      ensure_tree_sitter_cli(function()
+        treesitter.install(missing)
+      end)
+    end,
+  },
+}