feat(treesitter): use community fork provisioner

README.md

@@ -20,7 +20,7 @@ git clone --recurse-submodules git@github.com:itme-brain/nixos.git
 - **Smart LSP picker** (`<leader>css`) - auto-detects installed servers for current filetype
 - **Neovim 0.12 compatible** - uses built-in `:lsp` commands and keeps legacy `:Lsp*` aliases working
 - **Portable** - Mason is the source of truth for LSP servers and debug adapters
-- **Treesitter** - uses Neovim's native `vim.treesitter.*` APIs without `nvim-treesitter`
+- **Treesitter** - uses native `vim.treesitter.*` APIs with community fork provisioning
 - **Debugging** - lazy-loaded `nvim-dap` stack with Mason-managed adapters
 
 ## LSP Setup
@@ -46,11 +46,11 @@ On Neovim 0.12+, start/stop/restart uses the built-in `:lsp` commands under the
 Treesitter uses Neovim's native API:
 - Highlighting starts through `vim.treesitter.start`
 - Parser/filetype mappings use `vim.treesitter.language.register`
-- Parser and query installation is intentionally outside lazy.nvim and Mason
+- Parsers and queries are provisioned by the community `neovim-treesitter/nvim-treesitter` fork
 
 Neovim loads compiled parser libraries from `parser/` directories on `runtimepath` and query files from `queries/<language>/`.
-`tree-sitter-cli` is only needed by tools that generate or compile parsers from grammar sources; it is not required at runtime for highlighting.
-Prefer providing parsers and queries through Neovim's runtime or a reproducible system/development environment.
+`tree-sitter-cli` is only needed by the provisioner when installing or updating parsers; it is not required at runtime for highlighting.
+Mason bootstraps `tree-sitter-cli` when parser installation is needed.
 
 ## Debugging
 
@@ -99,6 +99,7 @@ Mason installs:
 - **nvim-cmp** - completion
 - **telescope.nvim** - fuzzy finder
 - **Native Treesitter** - syntax highlighting
+- **neovim-treesitter** - parser and query provisioning
 - **nvim-dap** - debug adapter client
 - **nvim-dap-ui** - debugging UI panes
 - **mason-nvim-dap.nvim** - Mason debug adapter integration

lazy-lock.json

@@ -10,6 +10,7 @@
   "mason-lspconfig.nvim": { "branch": "main", "commit": "0c2823e0418f3d9230ff8b201c976e84de1cb401" },
   "mason-nvim-dap.nvim": { "branch": "main", "commit": "9a10e096703966335bd5c46c8c875d5b0690dade" },
   "mason.nvim": { "branch": "main", "commit": "cb8445f8ce85d957416c106b780efd51c6298f89" },
+  "neovim-treesitter": { "branch": "main", "commit": "df7489eeea351bece7fd0f9c825be5cb6a1438f0" },
   "nvim-dap": { "branch": "master", "commit": "45a69eba683a2c448dd9ecfc4de89511f0646b5f" },
   "nvim-lspconfig": { "branch": "master", "commit": "31026a13eefb20681124706a79fc1df6bf11ab27" },
   "nvim-web-devicons": { "branch": "master", "commit": "4fc505ac7bd7692824a142e96e5f529c133862f8" },
@@ -18,5 +19,6 @@
   "plenary.nvim": { "branch": "master", "commit": "74b06c6c75e4eeb3108ec01852001636d85a932b" },
   "render-markdown.nvim": { "branch": "main", "commit": "3f3eea97b80839f629c951ca660ffd125bfa5b34" },
   "todo-comments.nvim": { "branch": "main", "commit": "31e3c38ce9b29781e4422fc0322eb0a21f4e8668" },
+  "treesitter-parser-registry": { "branch": "main", "commit": "6eb15358bb9fc88f0d3401d8538d56652e9bdf3c" },
   "which-key.nvim": { "branch": "main", "commit": "3aab2147e74890957785941f0c1ad87d0a44c15a" }
 }

lua/config/treesitter.lua

@@ -1,37 +1,12 @@
-local treesitter_filetypes = {
-  "lua",
-  "c",
-  "cpp",
-  "python",
-  "nix",
-  "rust",
-  "bash",
-  "markdown",
-  "html",
-  "javascript",
-  "javascriptreact",
-  "css",
-  "vim",
-  "gitconfig",
-  "gitrebase",
-  "gitattributes",
-  "gitcommit",
-  "gitignore",
-}
+local treesitter_languages = require("config.treesitter_languages")
 
-local language_by_filetype = {
-  gitconfig = "git_config",
-  gitrebase = "git_rebase",
-  javascriptreact = "javascript",
-}
-
-for filetype, language in pairs(language_by_filetype) do
+for filetype, language in pairs(treesitter_languages.language_by_filetype) do
   vim.treesitter.language.register(language, filetype)
 end
 
 vim.api.nvim_create_autocmd("FileType", {
   group = vim.api.nvim_create_augroup("config_treesitter", { clear = true }),
-  pattern = treesitter_filetypes,
+  pattern = treesitter_languages.filetypes,
   callback = function(event)
     local language = vim.treesitter.language.get_lang(vim.bo[event.buf].filetype)
     if not language then

lua/config/treesitter_languages.lua

@@ -0,0 +1,52 @@
+local M = {}
+
+M.install_parsers = {
+  "bash",
+  "cpp",
+  "css",
+  "git_config",
+  "git_rebase",
+  "gitattributes",
+  "gitcommit",
+  "gitignore",
+  "html",
+  "javascript",
+  "json",
+  "nix",
+  "python",
+  "rust",
+  "toml",
+  "yaml",
+}
+
+M.filetypes = {
+  "lua",
+  "c",
+  "cpp",
+  "python",
+  "nix",
+  "rust",
+  "bash",
+  "markdown",
+  "html",
+  "javascript",
+  "javascriptreact",
+  "css",
+  "json",
+  "toml",
+  "yaml",
+  "vim",
+  "gitconfig",
+  "gitrebase",
+  "gitattributes",
+  "gitcommit",
+  "gitignore",
+}
+
+M.language_by_filetype = {
+  gitconfig = "git_config",
+  gitrebase = "git_rebase",
+  javascriptreact = "javascript",
+}
+
+return M

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,
+  },
+}