Archlinux下的Python-pip安装需要多做的一步

今天在自己家台式机上安装supervisor的时候，supervisor报错：

Traceback (most recent call last):
    File "/usr/bin/supervisorctl", line 33, in <module>
        sys.exit(load_entry_point('supervisor==4.2.5', 'console_scripts', 'supervisorctl')())
    File "/usr/bin/supervisorctl", line 22, in importlib_load_entry_point
        for entry_point in distribution(dist_name).entry_points
    File "/usr/lib/python3.10/importlib/metadata/__init__.py", line 969, in distribution
        return Distribution.from_name(distribution_name)
    File "/usr/lib/python3.10/importlib/metadata/__init__.py", line 548, in from_name
        raise PackageNotFoundError(name)
importlib.metadata.PackageNotFoundError: No package metadata was found for supervisor

已经在用pacman安装了supervisor，但是package not found，所以试试pip install supervisor，结果居然：

Traceback (most recent call last):
    File "/usr/bin/pip", line 5, in <module>
        from pip._internal.cli.main import main
ModuleNotFoundError: No module named 'pip'

但是也已经在pacman安装了python-pip。Google一下，获得解决方案：

sudo python -m ensurepip --upgrade

这就安装好了pip。随后用pip安装supervisor：

sudo pip install supervisor