diff --git a/config/sketchybar/.luarc.json b/config/sketchybar/.luarc.json
new file mode 100644
index 0000000..0d4f72d
--- /dev/null
+++ b/config/sketchybar/.luarc.json
@@ -0,0 +1,7 @@
+{
+  "$schema": "https://raw.githubusercontent.com/LuaLS/vscode-lua/master/setting/schema.json",
+  "runtime.version": "Lua 5.4",
+  "diagnostics.global": [
+    "sbar"
+  ]
+}
diff --git a/config/sketchybar/items/aerospace.lua b/config/sketchybar/items/aerospace.lua
index 585157e..cc14139 100644
--- a/config/sketchybar/items/aerospace.lua
+++ b/config/sketchybar/items/aerospace.lua
@@ -1,25 +1,28 @@
-local Promise = require 'promise'
 local colors = require 'colors'
 local utils = require 'utils'
 local settings = require 'settings'
 local app_icons = require 'app_icons'
 
+local async = utils.async
+local await = utils.await
+local awaitAll = utils.awaitAll
+local exec = utils.exec
+
 local aerospace_cmd = '/opt/homebrew/bin/aerospace'
 
+-- Aerospace commands
 local function getAllWorkspaces()
-  return utils.sbarExecP(
-    aerospace_cmd .. " list-workspaces --all --format '%{workspace}%{monitor-appkit-nsscreen-screens-id}%{monitor-id}%{monitor-name}' --json"
-  )
+  return exec(aerospace_cmd .. " list-workspaces --all --format '%{workspace}%{monitor-appkit-nsscreen-screens-id}%{monitor-id}%{monitor-name}' --json")
 end
 
 local function getVisibleWorkspaces()
-  return utils.sbarExecP(
+  return exec(
     aerospace_cmd .. " list-workspaces --visible --monitor all --format '%{workspace}%{monitor-appkit-nsscreen-screens-id}%{monitor-id}%{monitor-name}' --json"
   )
 end
 
 local function getAllWindows()
-  return utils.sbarExecP(
+  return exec(
     aerospace_cmd
       .. " list-windows --all --format '%{app-name}%{window-title}%{workspace}%{monitor-id}%{monitor-appkit-nsscreen-screens-id}%{monitor-name}' --json"
   )
@@ -37,6 +40,7 @@ local function getMonitorId(obj)
   return tonumber(obj['monitor-id']) or 1
 end
 
+-- State
 local spaces = {}
 local space_paddings = {}
 local state = {
@@ -44,133 +48,135 @@ local state = {
   updating = false,
 }
 
-local function getState()
-  local newstate = { workspaces = {} }
-
-  -- Pre-initialize all workspaces from the spaces table
-  for workspaceid, _ in pairs(spaces) do
-    newstate.workspaces[workspaceid] = {
-      id = workspaceid,
-      monitor = 1,
-      active = false,
-      empty = true,
-      apps = {},
-      appicons = '',
-    }
+-- Build app icons string from app list
+local function buildAppIcons(apps)
+  local appkeys = {}
+  for app in pairs(apps) do
+    table.insert(appkeys, app)
   end
+  table.sort(appkeys)
 
-  return Promise.all({ getAllWorkspaces(), getVisibleWorkspaces(), getAllWindows() }):thenCall(function(values)
-    local all, visible, apps = values[1], values[2], values[3]
+  if #appkeys == 0 then return '' end
 
-    for _, workspace in ipairs(all) do
-      local workspaceid = workspace['workspace']
-      if newstate.workspaces[workspaceid] then newstate.workspaces[workspaceid]['monitor'] = getMonitorId(workspace) end
+  local icons = ''
+  for _, app in ipairs(appkeys) do
+    local lookup = app_icons[app]
+    local icon = lookup or app_icons['Default']
+    icons = icons .. ' ' .. icon
+  end
+  return icons
+end
+
+-- Fetch and build workspace state
+local fetchState = async(function()
+  if state.updating then return end
+  state.updating = true
+
+  local ok, err = pcall(function()
+    local all, visible, windows = table.unpack(awaitAll {
+      getAllWorkspaces(),
+      getVisibleWorkspaces(),
+      getAllWindows(),
+    })
+
+    local newstate = { workspaces = {} }
+
+    -- Initialize all workspaces
+    for workspaceid, _ in pairs(spaces) do
+      newstate.workspaces[workspaceid] = {
+        id = workspaceid,
+        monitor = 1,
+        active = false,
+        empty = true,
+        apps = {},
+      }
     end
 
-    for _, workspace in ipairs(visible) do
-      local workspaceid = workspace['workspace']
-      if newstate.workspaces[workspaceid] then newstate.workspaces[workspaceid]['active'] = true end
+    -- Set monitor IDs
+    for _, ws in ipairs(all) do
+      local id = ws['workspace']
+      if newstate.workspaces[id] then newstate.workspaces[id].monitor = getMonitorId(ws) end
     end
 
-    for _, window in ipairs(apps) do
-      local workspaceid = window['workspace']
-      local appname = window['app-name']
-      if newstate.workspaces[workspaceid] then
-        newstate.workspaces[workspaceid]['apps'][appname] = true
-        newstate.workspaces[workspaceid]['empty'] = false
+    -- Mark visible workspaces as active
+    for _, ws in ipairs(visible) do
+      local id = ws['workspace']
+      if newstate.workspaces[id] then newstate.workspaces[id].active = true end
+    end
+
+    -- Collect apps per workspace
+    for _, win in ipairs(windows) do
+      local id = win['workspace']
+      local app = win['app-name']
+      if newstate.workspaces[id] then
+        newstate.workspaces[id].apps[app] = true
+        newstate.workspaces[id].empty = false
       end
     end
 
-    for workspaceid, workspacestate in pairs(newstate.workspaces) do
-      local appkeys = {}
-      for app in pairs(workspacestate['apps']) do
-        table.insert(appkeys, app)
-      end
-      table.sort(appkeys)
-      if #appkeys > 0 then
-        for _, app in ipairs(appkeys) do
-          local lookup = app_icons[app]
-          local icon = ((lookup == nil) and app_icons['Default'] or lookup)
-          workspacestate['appicons'] = workspacestate['appicons'] .. ' ' .. icon
-        end
-      else
-        workspacestate['appicons'] = ''
-      end
+    -- Build app icons
+    for _, ws in pairs(newstate.workspaces) do
+      ws.appicons = buildAppIcons(ws.apps)
     end
 
-    return newstate
+    state.workspaces = newstate.workspaces
   end)
-end
 
-local function updateState()
-  if not state.updating then
-    state.updating = true
-    return getState()
-      :thenCall(function(newstate)
-        state.workspaces = newstate.workspaces
-        state.updating = false
-      end)
-      :catch(function(err)
-        state.updating = false
-        print('Error updating state: ' .. tostring(err))
-      end)
-  end
-  return Promise.resolve()
-end
+  state.updating = false
+  if not ok then print('Error fetching state: ' .. tostring(err)) end
+end)
 
+-- Sync UI with state
 local function syncState()
   sbar.animate('tanh', 10, function()
-    for workspaceid, workspacestate in pairs(state.workspaces) do
-      if not workspacestate['empty'] or workspacestate['active'] then
-        spaces[workspaceid]:set {
-          drawing = true,
-          display = workspacestate['monitor'],
-          label = {
-            string = workspacestate['appicons'],
-            highlight = workspacestate['active'],
-          },
-          icon = {
-            highlight = workspacestate['active'],
-          },
-        }
-        space_paddings[workspaceid]:set { drawing = true }
-      else
-        spaces[workspaceid]:set {
-          drawing = false,
-          display = workspacestate['monitor'],
-          label = workspacestate['appicons'],
-        }
-        space_paddings[workspaceid]:set { drawing = false }
-      end
+    for id, ws in pairs(state.workspaces) do
+      local shouldShow = not ws.empty or ws.active
+
+      spaces[id]:set {
+        drawing = shouldShow,
+        display = ws.monitor,
+        label = {
+          string = ws.appicons,
+          highlight = ws.active,
+        },
+        icon = {
+          highlight = ws.active,
+        },
+      }
+      space_paddings[id]:set { drawing = shouldShow }
     end
   end)
 end
 
-local function updateStateAndSync() return updateState():thenCall(syncState) end
+local function updateStateAndSync()
+  fetchState()
+  -- Use a small delay to let fetchState complete before syncing
+  sbar.exec('sleep 0.1', syncState)
+end
 
+-- Handle workspace change event
 local function onActiveSpaceChange(env)
-  local focused_workspace = env.FOCUSED_WORKSPACE
-  local prev_workspace = env.PREV_WORKSPACE
+  local focused = env.FOCUSED_WORKSPACE
+  local prev = env.PREV_WORKSPACE
 
-  -- Immediately show the focused workspace with animation
-  if spaces[focused_workspace] then
+  -- Immediately update UI for responsiveness
+  if spaces[focused] then
     sbar.animate('tanh', 10, function()
-      spaces[focused_workspace]:set {
+      spaces[focused]:set {
         drawing = true,
         icon = { highlight = true },
         label = { highlight = true },
       }
-      space_paddings[focused_workspace]:set { drawing = true }
+      space_paddings[focused]:set { drawing = true }
 
-      if spaces[prev_workspace] then
-        spaces[prev_workspace]:set {
+      if spaces[prev] then
+        spaces[prev]:set {
           icon = { highlight = false },
           label = { highlight = false },
         }
-        -- Hide previous workspace if it's empty
-        if state.workspaces[prev_workspace] and state.workspaces[prev_workspace]['empty'] then
-          spaces[prev_workspace]:set { drawing = false }
-          space_paddings[prev_workspace]:set { drawing = false }
+        if state.workspaces[prev] and state.workspaces[prev].empty then
+          spaces[prev]:set { drawing = false }
+          space_paddings[prev]:set { drawing = false }
         end
       end
     end)
@@ -179,60 +185,62 @@ local function onActiveSpaceChange(env)
   updateStateAndSync()
 end
 
-local function setup()
-  getAllWorkspaces()
-    :thenCall(function(workspaces)
-      for _, workspace in ipairs(workspaces) do
-        local workspaceid = workspace['workspace']
-        local display = getMonitorId(workspace)
+-- Setup
+local setup = async(function()
+  local workspaces = await(getAllWorkspaces())
 
-        local space = sbar.add('item', 'space.' .. workspaceid, {
-          drawing = false,
-          updates = 'when_shown',
-          display = display,
-          icon = {
-            string = workspaceid,
-            color = colors.fg,
-            highlight_color = colors.red,
-          },
-          label = {
-            padding_right = 12,
-            color = colors.fg,
-            highlight_color = colors.blue,
-            font = 'sketchybar-app-font:Regular:14.0',
-            y_offset = -1,
-          },
-          padding_left = 1,
-          padding_right = 1,
-          click_script = aerospace_cmd .. ' workspace ' .. workspaceid,
-        })
+  -- Create space items
+  for _, ws in ipairs(workspaces) do
+    local id = ws['workspace']
+    local display = getMonitorId(ws)
 
-        spaces[workspaceid] = space
+    local space = sbar.add('item', 'space.' .. id, {
+      drawing = false,
+      updates = 'when_shown',
+      display = display,
+      icon = {
+        string = id,
+        color = colors.fg,
+        highlight_color = colors.red,
+      },
+      label = {
+        padding_right = 12,
+        color = colors.fg,
+        highlight_color = colors.blue,
+        font = 'sketchybar-app-font:Regular:14.0',
+        y_offset = -1,
+      },
+      padding_left = 1,
+      padding_right = 1,
+      click_script = aerospace_cmd .. ' workspace ' .. id,
+    })
+    spaces[id] = space
 
-        local padding = sbar.add('space', 'space.padding.' .. space.name, {
-          drawing = false,
-          updates = 'when_shown',
-          display = display,
-          script = '',
-          width = settings.space_paddings,
-        })
-        space_paddings[workspaceid] = padding
-      end
-    end)
-    :thenCall(function()
-      sbar.add('event', 'aerospace_workspace_change')
+    local padding = sbar.add('space', 'space.padding.' .. space.name, {
+      drawing = false,
+      updates = 'when_shown',
+      display = display,
+      script = '',
+      width = settings.space_paddings,
+    })
+    space_paddings[id] = padding
+  end
 
-      local space_window_observer = sbar.add('item', {
-        drawing = false,
-        updates = true,
-      })
+  -- Register events
+  sbar.add('event', 'aerospace_workspace_change')
 
-      space_window_observer:subscribe('aerospace_workspace_change', onActiveSpaceChange)
-      space_window_observer:subscribe('space_windows_change', updateStateAndSync)
-      space_window_observer:subscribe('system_woke', updateStateAndSync)
-      space_window_observer:subscribe('front_app_switched', updateStateAndSync)
-    end)
-    :thenCall(updateStateAndSync)
-end
+  local observer = sbar.add('item', {
+    drawing = false,
+    updates = true,
+  })
+
+  observer:subscribe('aerospace_workspace_change', onActiveSpaceChange)
+  observer:subscribe('space_windows_change', updateStateAndSync)
+  observer:subscribe('system_woke', updateStateAndSync)
+  observer:subscribe('front_app_switched', updateStateAndSync)
+
+  -- Initial state sync
+  updateStateAndSync()
+end)
 
 setup()
diff --git a/config/sketchybar/utils.lua b/config/sketchybar/utils.lua
index f9e292d..ac0b7ec 100644
--- a/config/sketchybar/utils.lua
+++ b/config/sketchybar/utils.lua
@@ -1,5 +1,3 @@
-local Promise = require 'promise'
-
 local M = {}
 
 function M.dump(o)
@@ -15,19 +13,68 @@ function M.dump(o)
   end
 end
 
-local function onErrorP(reason) print('Error found: ' .. (reason and M.dump(reason) or 'unknown')) end
+-- Coroutine-based async/await helpers
+function M.await(callback_fn)
+  local co = coroutine.running()
+  if not co then error 'await must be called inside async' end
 
--- https://github.com/Tnixc/nix-config/blob/main/home/programs/aerospace-sketchybar/sbar-config-libs/items/aerospaces.lua
-function M.sbarExecP(cmd)
-  return Promise.new(function(resolve, failfunc)
+  local result, err
+  local done = false
+
+  callback_fn(function(res, e)
+    result = res
+    err = e
+    done = true
+    if coroutine.status(co) == 'suspended' then coroutine.resume(co) end
+  end)
+
+  if not done then coroutine.yield() end
+  if err then error(err) end
+  return result
+end
+
+function M.awaitAll(callback_fns)
+  local co = coroutine.running()
+  if not co then error 'awaitAll must be called inside async' end
+
+  local results = {}
+  local pending = #callback_fns
+  local err = nil
+
+  for i, fn in ipairs(callback_fns) do
+    fn(function(res, e)
+      if e then err = e end
+      results[i] = res
+      pending = pending - 1
+      if pending == 0 and coroutine.status(co) == 'suspended' then coroutine.resume(co) end
+    end)
+  end
+
+  if pending > 0 then coroutine.yield() end
+  if err then error(err) end
+  return results
+end
+
+function M.async(fn)
+  return function(...)
+    local args = { ... }
+    local co = coroutine.create(function() fn(table.unpack(args)) end)
+    local ok, err = coroutine.resume(co)
+    if not ok then print('Async error: ' .. tostring(err)) end
+  end
+end
+
+-- Execute a shell command, returns a callback function for use with await
+function M.exec(cmd)
+  return function(resolve)
     sbar.exec(cmd, function(result, exit_code)
       if exit_code ~= 0 then
-        if failfunc ~= nil then failfunc(string.format('Exit Code: %s Message: %s', tostring(exit_code), M.dump(result))) end
+        resolve(nil, string.format('Exit Code: %s Message: %s', tostring(exit_code), M.dump(result)))
       else
-        if resolve ~= nil then resolve(result) end
+        resolve(result, nil)
       end
     end)
-  end):catch(onErrorP)
+  end
 end
 
 return M
diff --git a/darwin/sketchybar/default.nix b/darwin/sketchybar/default.nix
index 0d3c082..1c1ef52 100644
--- a/darwin/sketchybar/default.nix
+++ b/darwin/sketchybar/default.nix
@@ -45,6 +45,7 @@ in
 
     hm.home.packages = with pkgs; [
       sketchybar-app-font
+      custom.sk-utils
     ];
 
     hm.xdg.configFile = {