update launcher

launch.py

@@ -144,7 +144,10 @@ def run_extension_installer(extension_dir):
         env = os.environ.copy()
         env['PYTHONPATH'] = os.path.abspath(".")
 
-        print(run(f'"{python}" "{path_installer}"', errdesc=f"Error running install.py for extension {extension_dir}", custom_env=env))
+        stdout = run(f'"{python}" "{path_installer}"', errdesc=f"Error running install.py for extension {extension_dir}", custom_env=env)
+        if stdout is not None:
+            print(stdout)
+
     except Exception as e:
         print(e, file=sys.stderr)
 
@@ -261,7 +264,7 @@ def prepare_environment():
 
     if update_check:
         version_check(commit)
-    
+
     if "--exit" in sys.argv:
         print("Exiting because of --exit argument")
         exit(0)