use treesitter plugins provided by nixpkgs

flake.nix

@@ -15,10 +15,8 @@
       nativeBuildInputs = [
         pkgs.alejandra
         pkgs.ccls
-        pkgs.clang
         pkgs.luaformatter
         pkgs.nixd
-        pkgs.nixd
         pkgs.pyright
         pkgs.rust-analyzer
         pkgs.sumneko-lua-language-server

nvim-lsp.nix

@@ -17,10 +17,10 @@
           parsers.nix
           parsers.python
           parsers.query
+          parsers.rust
           parsers.verilog
           parsers.vimdoc
           parsers.zig
-          parsers.rust
         ]))
         cmp-buffer
         cmp-cmdline

vimrc.lua

@@ -25,13 +25,8 @@ if vim.fn.isdirectory(parser_install_dir) == 0 then
 	vim.fn.mkdir(parser_install_dir, "p")
 end
 -- Adding runtime needed for Nix setup on non NixOS
-vim.o.runtimepath = vim.o.runtimepath .. "," .. parser_install_dir
-
-require 'nvim-treesitter.install'.compilers = { 'gcc' }
 
 require 'nvim-treesitter.configs'.setup {
-	ensure_installed = { "c", "cpp", "zig", "python", "verilog", "nix", "lua", "latex" },
-	parser_install_dir = parser_install_dir,
 	highlight = { enable = true, disable = {} },
 	indent = { enable = false, disable = {} },
 	rainbow = {