refactor: Set light/dark mode more concisely

init.lua

@@ -68,10 +68,8 @@ end
 
 if vim.fn.executable('darkman') then
 	local mode = vim.trim(vim.fn.system('darkman get'))
-	if mode == 'dark' then
-		vim.o.background = 'dark'
-	elseif mode == 'light' then
-		vim.o.background = 'light'
+	if mode == 'dark' or mode == 'light' then
+		vim.o.background = mode
 	end
 end
 
@@ -163,7 +161,6 @@ au('BufWritePost', {
 	desc = 'Reload config when it is saved, and compile packer cache',
 })
 au('TextYankPost', {
-	pattern = '*',
 	callback = vim.highlight.on_yank,
 	desc = 'Highlight when text is yanked',
 })
@@ -752,6 +749,7 @@ require'lspconfig'.sumneko_lua.setup {
 require'lspconfig'.bashls.setup(default)
 require'lspconfig'.clangd.setup(default)
 require'lspconfig'.jdtls.setup(default)
+require'lspconfig'.nil_ls.setup(default)
 require'lspconfig'.pyright.setup(default)
 require'lspconfig'.tsserver.setup(default)
 require'lspconfig'.vimls.setup(default)