systemd: tentative to manage session with systemd

To me, I think it was cleaner to have a parameter with the current
display. This way, the session is specific to the current display. It
seems BindsTo doesn't think this way.

rc/start.lua

@@ -1,11 +1,5 @@
 -- Start idempotent commands
 local execute = {
-   -- Kill any running nm-applet
-   "pkill nm-applet",
-   -- Start PulseAudio
-   "xset -b",	-- Disable bell
-   -- Enable numlock
-   "numlockx on",
    -- Default browser
    "xdg-mime default " .. config.browser .. ".desktop " ..
       "x-scheme-handler/http " ..
@@ -17,8 +11,3 @@ local execute = {
 }
 
 os.execute(table.concat(execute, ";"))
-
--- Spawn various X programs
-xrun("polkit-gnome-authentication-agent-1",
-     "/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1")
-xrun("NetworkManager Applet", "nm-applet")

rc/xrun.lua

@@ -1,36 +0,0 @@
--- run a command only if the client does not already exist
-
-local xrun_now = function(name, cmd)
-   -- Try first the list of clients from awesome (which is available
-   -- only if awesome has fully started, therefore, this function
-   -- should be run inside a 0 timer)
-   local squid = { name, name:sub(1,1):upper() .. name:sub(2) }
-   if awful.client.cycle(
-      function(c)
-	 return awful.rules.match_any(c,
-				      { name = squid,
-					class = squid,
-					instance = squid })
-      end)() then
-      return
-   end
-
-   -- Not found, let's check with xwininfo. We can only check name but
-   -- we can catch application without a window...
-   if os.execute("xwininfo -name '" .. name .. "' > /dev/null 2> /dev/null") == 0 then
-      return
-   end
-   awful.util.spawn(cmd or name, false)
-end
-
--- Run a command if not already running.
-xrun = function(name, cmd)
-   -- We need to wait for awesome to be ready. Hence the timer.
-   local stimer = timer { timeout = 0 }
-   local run = function()
-      stimer:stop()
-      xrun_now(name, cmd)
-   end
-   stimer:add_signal("timeout", run)
-   stimer:start()
-end