neovim-config/lua/conf/langs/general.lua

-- General configuration
vim.g.ale_linters = {
  python = {'black', 'flake8'},
	c = {'clang-format'},
	cpp = {'clang-format'}
}

vim.g.ale_fixers = {
	['*'] = {'remove_trailing_lines', 'trim_whitespace'}
}

vim.g.ale_fix_on_save = 1

-- LSP Configurations
require("mason").setup({
     ui = {
        icons = {
            package_installed = "✓",
            package_pending = "➜",
            package_uninstalled = "✗"
        }
    }
  })
require("mason-lspconfig").setup()

-- Auto-format code on save
vim.api.nvim_create_autocmd({"BufWritePre"}, {
  callback = function()
    vim.lsp.buf.format()
  end
})

-- Treesitter config.
require'nvim-treesitter.configs'.setup {
  ensure_installed = {
      "c",
      "lua",
      "markdown",
      "python",
      "rust",
      "toml",
      "query",
      "vim",
      "vimdoc",
  },

  -- Prefer asynchronous install for ensure_installed.
  sync_install = false,
  auto_install = true,

  highlight = {
    enable = true,

    -- Disable for excessively large files.
    disable = function(lang, buf)
        local max_filesize = 100 * 1024 -- 100 KB
        local ok, stats = pcall(vim.loop.fs_stat, vim.api.nvim_buf_get_name(buf))
        if ok and stats and stats.size > max_filesize then
            return true
        end
    end,

    -- Disable vim regex highlighting. May intefer with some `indent` style stuff.
    additional_vim_regex_highlighting = false,
  },
  ident = {enable = true },
  rainbow = {
    enable = true,
    extended_mode = true,
    max_file_lines = nil,
  }

}