Ubuntu 22.04下无法安装python3.8-venv的解决求助

我需要在Ubuntu 22.04系统中创建一个基于Python 3.8的virtualenv，因此得先安装python3.8-venv。在成功安装Python 3.8后，我尝试按以下步骤操作，但遇到了依赖问题：

1. 尝试安装python3.8-venv：

odroid@test002:~$ sudo apt install python3.8-venv
[sudo] password for odroid:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python3.8-venv : Depends: python3.8-distutils
E: Unable to correct problems, you have held broken packages.

2. 查询python3-distutils的候选版本（我们内部有托管在test03.com的Ubuntu 20和22镜像）：

odroid@test002:~$ sudo apt-cache policy python3-distutils
python3-distutils:
  Installed: (none)
  Candidate: 3.10.6-1~22.04
  Version table:
     3.10.6-1~22.04 500
        500 http://test03.com/ubuntu-22 jammy-updates/main armhf Packages
     3.10.4-0ubuntu1 500
        500 http://test03.com/ubuntu-22 jammy/main armhf Packages
     3.8.10-0ubuntu1~20.04 500
        500 http://test03.com/ubuntu-20 focal-updates/main armhf Packages
        500 http://test03.com/ubuntu-20 focal-security/main armhf Packages
     3.8.2-1ubuntu1 500
        500 http://test03.com/ubuntu-20 focal/main armhf Packages

3. 尝试安装3.8.10版本的python3-distutils：

odroid@test002:~$ sudo apt install python3-distutils=3.8.10-0ubuntu1~20.04
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python3-distutils : Depends: python3:any (< 3.10)
                     Depends: python3-lib2to3 (= 3.8.10-0ubuntu1~20.04) but 3.10.4-0ubuntu1 is to be installed
E: Unable to correct problems, you have held broken packages.

4. 查询3.8.10版本的python3-lib2to3候选版本：

odroid@test002:~$ sudo apt-cache policy python3-lib2to3
python3-lib2to3:
  Installed: 3.10.4-0ubuntu1
  Candidate: 3.10.6-1~22.04
  Version table:
     3.10.6-1~22.04 500
        500 http://test03.com/ubuntu-22 jammy-updates/main armhf Packages
 *** 3.10.4-0ubuntu1 500
        500 http://test03.com/ubuntu-22 jammy/main armhf Packages
        100 /var/lib/dpkg/status
     3.8.10-0ubuntu1~20.04 500
        500 http://test03.com/ubuntu-new focal-updates/main armhf Packages
        500 http://test03.com/ubuntu-new focal-security/main armhf Packages
     3.8.2-1ubuntu1 500
        500 http://test03.com/ubuntu-new focal/main armhf Packages

5. 尝试安装3.8.10版本的python3-lib2to3：

odroid@test002:~$ sudo apt install python3-lib2to3=3.8.10-0ubuntu1~20.04
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python3-lib2to3 : Depends: python3:any (< 3.10)
E: Unable to correct problems, you have held broken packages.

请问该如何解决上述问题？

内容的提问来源于stack exchange，提问作者aaron02