add vim rooter

nvim.lua/.config/nvim/lua/lsp_setup.lua

@@ -49,7 +49,7 @@ vim.cmd([[set signcolumn=yes]])
 
 -- Setting up servers per language
 -- Nix
-nvim_lsp['rnix'].setup{
+nvim_lsp['nil_ls'].setup{
     on_attach = on_attach,
     flags = lsp_flags,
     capabilities = capabilities,

nvim.lua/.config/nvim/lua/plugins.lua

@@ -67,6 +67,7 @@ return require('packer').startup(function(use)
 
     -- Nifty stuff
     use 'tpope/vim-surround'
+    use 'airblade/vim-rooter'
     use {
         'ibhagwan/fzf-lua',
         config = setup_fzf(),