fixes

nvim/lua/plugins/lualine.lua

@@ -1,24 +1,23 @@
+local layout = "EN"
+
+local function update_layout()
+  vim.system({ "im-select" }, { text = true }, function(result)
+    if result.stdout then
+      layout = result.stdout:find("Russian") and "RU" or "EN"
+    end
+  end)
+end
+
+-- Update layout in background every second, never blocks UI
+local timer = vim.loop.new_timer()
+timer:start(0, 1000, vim.schedule_wrap(update_layout))
+
 local function keyboard_layout()
-  local handle = io.popen("im-select")
-  if not handle then
-    return ""
-  end
-  local result = handle:read("*a")
-  handle:close()
-  if result:find("Russian") then
-    return "RU"
-  end
-  return "EN"
+  return layout
 end
 
 local function keyboard_layout_color()
-  local handle = io.popen("im-select")
-  if not handle then
-    return { bg = "#a6e3a1", fg = "#1e1e2e", gui = "bold" }
-  end
-  local result = handle:read("*a")
-  handle:close()
-  if result:find("Russian") then
+  if layout == "RU" then
     return { bg = "#f38ba8", fg = "#1e1e2e", gui = "bold" }
   end
   return { bg = "#a6e3a1", fg = "#1e1e2e", gui = "bold" }