fix(treesitter): Make Treesitter install on start

Recent changes to treesitter have made it so that it cannot
automatically install the languages you want. As such I have cobbled
together this script to make it work right for me.

lua/core/init.lua

@@ -8,6 +8,7 @@ M.setup = function()
 
 	-- Load this after loading plugins to ensure default lspconfig is there
 	require("core.lspconfig")
+	require("core.treesitter")
 
 	vim.cmd.colorscheme("gruvbox")
 end

lua/core/treesitter.lua

@@ -0,0 +1,71 @@
+-- Due to the complete infrastructure change in nvim-tressiter
+-- this file exists to install all the languages I want
+-- and then make sure that treesitter support is enabled for them
+
+--- This is a mapping of parsers to filetypes
+--- where the parser name and filetype is the same we leave the filetype blank
+--- otherwise the filetype is the filetype(s) that the parser should be used in
+local languages = {
+	["bash"] = "",
+	["c"] = "",
+	["cpp"] = "",
+	["css"] = "",
+	["c_sharp"] = "",
+	["diff"] = "",
+	["git_config"] = "gitconfig",
+	["git_rebase"] = "",
+	["gitcommit"] = "",
+	["gitignore"] = "",
+	["go"] = "",
+	["gomod"] = "",
+	["html"] = "",
+	["ini"] = "",
+	["javascript"] = "",
+	["jsonnet"] = "",
+	["latex"] = "",
+	["lua"] = "",
+	["luadoc"] = "",
+	["luap"] = "",
+	["make"] = "",
+	["markdown"] = "",
+	["markdown_inline"] = "markdown",
+	["python"] = "",
+	["query"] = "",
+	["regex"] = "",
+	["rust"] = "",
+	["scss"] = "",
+	["toml"] = "",
+	["vim"] = "",
+	["vimdoc"] = "",
+	["yuck"] = "",
+	["yaml"] = "",
+	["zig"] = "",
+}
+
+local parsers = {}
+local filetypes = {}
+local TS = require("nvim-treesitter")
+
+for parser, filetype in pairs(languages) do
+	if filetype == "" then
+		table.insert(filetypes, parser)
+	else
+		table.insert(filetypes, parser)
+	end
+	table.insert(parsers, parser)
+end
+TS.install(parsers, { summary = true })
+
+local all_parsers = TS.get_installed()
+
+local alltype = vim.tbl_extend("force", filetypes, all_parsers)
+
+vim.api.nvim_create_augroup("ts-augroup", {})
+vim.api.nvim_create_autocmd("FileType", {
+	pattern = alltype,
+	callback = function()
+		vim.treesitter.start()
+		vim.bo.indentexpr = "v:lua.require'nvim-treesitter'.indentexpr()"
+		require("treesitter-context").enable()
+	end,
+})

lua/plugins/spec/treesitter.lua

@@ -3,6 +3,13 @@ return {
 		"nvim-treesitter/nvim-treesitter",
 		lazy = false,
 		branch = "main",
-		build = "TSUpdate",
+		build = ":TSUpdate",
+		setup = true,
+	},
+	{
+		"nvim-treesitter/nvim-treesitter-context",
+		dependencies = {
+			"nvim-treesitter/nvim-treesitter",
+		},
 	},
 }