add exception for nix files to use spaces instead of tabs

init.lua

@@ -91,7 +91,7 @@ vim.g.mapleader = ' '
 vim.g.maplocalleader = ' '
 
 -- Set to true if you have a Nerd Font installed and selected in the terminal
-vim.g.have_nerd_font = false
+vim.g.have_nerd_font = true
 
 -- [[ Setting options ]]
 -- See `:help vim.o`
@@ -102,7 +102,7 @@ vim.g.have_nerd_font = false
 vim.o.number = true
 -- You can also add relative line numbers, to help with jumping.
 --  Experiment for yourself to see if you like it!
--- vim.o.relativenumber = true
+vim.o.relativenumber = true
 
 -- Enable mouse mode, can be useful for resizing splits for example!
 vim.o.mouse = 'a'
@@ -150,7 +150,9 @@ vim.o.splitbelow = true
 --   See `:help lua-options`
 --   and `:help lua-options-guide`
 vim.o.list = true
-vim.opt.listchars = { tab = '» ', trail = '·', nbsp = '␣' }
+vim.opt.listchars = { tab = '– ', trail = '·', nbsp = '␣' }
+vim.opt.tabstop = 2
+vim.opt.shiftwidth = 2
 
 -- Preview substitutions live, as you type!
 vim.o.inccommand = 'split'
@@ -219,6 +221,14 @@ vim.api.nvim_create_autocmd('TextYankPost', {
   end,
 })
 
+-- Use spaces for nix files
+vim.api.nvim_create_autocmd('FileType', {
+  pattern = 'nix',
+  callback = function()
+    vim.opt_local.expandtab = true
+  end,
+})
+
 -- [[ Install `lazy.nvim` plugin manager ]]
 --    See `:help lazy.nvim.txt` or https://github.com/folke/lazy.nvim for more info
 local lazypath = vim.fn.stdpath 'data' .. '/lazy/lazy.nvim'