Add autocommand to run just on :make when justfile is present and add ccls

lua/commands.lua

@@ -9,7 +9,7 @@ vim.cmd [[autocmd BufWritePre * lua vim.lsp.buf.format()]]
 vim.cmd 'command W :execute \':silent w !sudo tee % > /dev/null\' | :edit!'
 
 -- Array of file names indicating root directory. Modify to your liking.
-local root_names = { '.git', 'Makefile' }
+local root_names = { '.git', 'Makefile', 'justfile' }
 
 -- Cache to use for speed up (at cost of possibly outdated results)
 local root_cache = {}
@@ -35,3 +35,16 @@ end
 
 local root_augroup = vim.api.nvim_create_augroup('MyAutoRoot', {})
 vim.api.nvim_create_autocmd('BufEnter', { group = root_augroup, callback = set_root })
+
+local function set_makeprg()
+	local cwd = vim.fn.getcwd()
+
+	if vim.fn.filereadable(cwd .. '/justfile') == 1 then
+		vim.o.makeprg = 'just'
+	elseif vim.fn.filereadable(cwd .. '/Makefile') == 1 then
+		vim.o.makeprg = 'make'
+	end
+end
+
+local makeprg_augroup = vim.api.nvim_create_augroup('MyMakeprg', {})
+vim.api.nvim_create_autocmd('BufEnter', { pattern = '*', group = makeprg_augroup, callback = set_makeprg, })