lemonbar: Move all lemonbar parsing to units.

Remove i3 workspaces dependency on lemonbar. Implement sorting and
alignment of modules

.i3/lemonbar/i3_lemonbar_launcher.py

@@ -10,11 +10,9 @@ import i3_lemonbar_config  as config
 import i3_lemonbar_common  as common
 import i3_lemonbar_modules as modules
 import i3_lemonbar_parser  as lemonparser
-import i3_workspaces       as wspaces
 
 p_conky_slow = None
 p_lemonbar = None
-i3_ws_obj = None
 
 def assert_only_instance():
     """
@@ -90,19 +88,16 @@ def clean_up():
     nice_delete(config.fifo_file_status)
     nice_term(p_conky_slow)
     modules.stop_all()
-    if i3_ws_obj is not None:
-        i3_ws_obj.quit()
     sys.exit(0)
 
-def write_sys_status():
-    global i3_ws_obj
-
-    i3_ws_obj = wspaces.i3ws(logger=common.logger, fifo_file=config.fifo_file_status)
-    i3_ws_obj.work()
-
 def queue_parse_job(job):
     common.parsing_queue.put(job)
 
+def keep_fifo_open():
+    with open(config.fifo_file_status, 'w', buffering=1) as fifo_write:
+        while True:
+            fifo_write.write('HEARTBEAT\n')
+            time.sleep(30)
 def put_fifo_in_queue():
     with open(config.fifo_file_status, 'r', buffering=1) as fifo_read:
         # Let parser read from fifo
@@ -263,8 +258,8 @@ if __name__ == "__main__":
     # Create readers before writers
     i3_thread(target = exec_commands, desc='Exec commands thread')
     i3_thread(target = parse_status, desc='Parse status thread')
+    i3_thread(target = keep_fifo_open, desc='')
     i3_thread(target = put_fifo_in_queue, desc='')
-    i3_thread(target = write_sys_status, desc='Write sys status thread')
     i3_thread(target = user_screen, desc='Screen thread for user commands')
     modules.start_all()