in install.py: threading replaced with multiprocessing

install.py

@@ -1,28 +1,29 @@
 import os
 from sys import argv
-from threading import Thread
+from multiprocessing import Process, Queue
 import apt
 
 OUTPUT = ''
-LOLCAT = False
+LOLCAT = Queue()
 
-def check_lolcat():
-    global LOLCAT
-    LOLCAT = apt.Cache()['lolcat'].is_installed
-    if LOLCAT: print('lolcat detected!')
+def check_lolcat(queue):
+    if apt.Cache()['lolcat'].is_installed:
+        queue.put(True)
+        print('lolcat detected!')
+    else: queue.put(False)
 def echo(text): 
     global OUTPUT
     OUTPUT += text + '\n'
 def output_flush():
     global OUTPUT 
-    os.system(f"echo \"{OUTPUT[:-1]}\"{'| /usr/games/lolcat' if LOLCAT else ''}")
+    os.system(f"echo \"{OUTPUT[:-1]}\"{'| /usr/games/lolcat' if LOLCAT.get() else ''}")
 
 if os.getuid() != 0:
     print('root rights required\nrun \'sudo python install.py\'')
     exit(1)
 path = 'src/ompl_src/'
-check_lolcat_thread = Thread(target=check_lolcat)
-check_lolcat_thread.start()
+check_lolcat_process = Process(target=check_lolcat, args=(LOLCAT,))
+check_lolcat_process.start()
 if 'r' in argv:
     os.system(f'rm {path}obj/ -rf')
     os.system(f'rm {path}lib/ -rf')
@@ -55,5 +56,5 @@ if 'c' in argv:
     os.system('rm src/ompl_src/lib/ -r | rm src/ompl_src/obj/ -r')
     echo('=' * 13)
 echo('done')
-check_lolcat_thread.join()
+check_lolcat_process.join()
 output_flush()