Dear Maintainer,

When compiling firefox 126.0 on loong64, the following error occurred.
After installing python3-venv, the problem was solved.
patch:
--- a/debian/control.in 2024-05-29 03:36:06.696109308 +0000
+++ b/debian/control.in 2024-05-29 03:37:08.840042343 +0000
@@ -18,6 +18,7 @@
 %endif
                libreadline-dev,
                python3 (>= 3.6),
+               python3-venv,
                dpkg-dev,
 %if USE_SYSTEM_NSPR
 %define NSPR_VERSION 4.32

build error msg:
Traceback (most recent call last):
  File "/usr/src/firefox/firefox-126.0/./mach", line 199, in <module>
    main(sys.argv[1:])
  File "/usr/src/firefox/firefox-126.0/./mach", line 155, in main
    mach = check_and_get_mach(os.path.dirname(os.path.realpath(__file__)),
args)

 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/firefox/firefox-126.0/./mach", line 39, in
check_and_get_mach
    return load_mach(dir_path, mach_path, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/firefox/firefox-126.0/./mach", line 25, in load_mach
    return mach_initialize.initialize(dir_path, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/firefox/firefox-126.0/build/mach_initialize.py", line 354,
in initialize
    command_site_manager.activate()
  File "/usr/src/firefox/firefox-126.0/python/mach/mach/site.py", line 602,
in activate
    self.ensure()
  File "/usr/src/firefox/firefox-126.0/python/mach/mach/site.py", line 574,
in ensure
    _create_venv_with_pthfile(
  File "/usr/src/firefox/firefox-126.0/python/mach/mach/site.py", line
1290, in _create_venv_with_pthfile
    raise subprocess.CalledProcessError(
subprocess.CalledProcessError: Command '['/usr/bin/python3', '-m', 'venv',
'--without-pip',
'/usr/src/firefox/firefox-126.0/debian/.mozbuild/srcdirs/firefox-126.0-600b8d9dd763/_virtualenvs/common']'
returned non-zero exit status 1.