Python 3.8 and Python 3.12 apps on the same instance of Unit

[interblitz]

Is it possible to have Python 3.8 and Python 3.12 apps on the same instance of Unit?

unit-python3.12 is installed successfully. But
sudo apt install unit-python3.8
on Ubuntu 24.04 fails:
Unable to locate package unit-python38

Simplified configuration is:
"applications": {
"app38": {
"type": "python 3.8",
"protocol": "wsgi",
"module": "wsgi",
"callable": "app",
},
"app312": {
"type": "python 3.12",
"protocol": "wsgi",
"module": "wsgi",
"callable": "app",
}
}

Result of applying this configuration is:
{
"error": "Invalid configuration.",
"detail": "The module to run "python 3.8" is not found among the available application modules."
}

May be there is another way to specify type of app38 to run with Python 3.8?

[ac000]

Is it possible to have Python 3.8 and Python 3.12 apps on the same instance of Unit?

Absolutely!

{
"error": "Invalid configuration.",
"detail": "The module to run "python 3.8" is not found among the available application modules."
}

What modules does Unit show as loaded from the /status/modules endpoint. E.g.

$ curl --unix-socket /opt/unit/control.unit.sock http://localhost/status/modules

{
        "python": [
            {
                "version": "3.12.3",
                "lib": "/opt/unit/modules/python.unit.so"
            },
            {
                "version": "3.8",
                "lib": "/opt/unit/modules/python-3.8.unit.so"
            }
        ],

        "php": {
           "version": "8.3.4",
           "lib": "/opt/unit/modules/php.unit.so"
        }
}

But it looks like you don't have a Python 3.8 language module...

Unable to locate package unit-python38

[interblitz]

Yes, indeed, only 3.12 language module installed:
{
"python": {
"version": "3.12.3",
"lib": "/usr/lib/unit/modules/python3.12.unit.so"
}
}

But how to install unit-python3.8 on Ubuntu 24.04?

sudo apt install unit-python3.8
on Ubuntu 24.04 fails:
Unable to locate package unit-python38

[interblitz]

After adding unit-focal.list in the /etc/apt/sources.list.d

deb [signed-by=/usr/share/keyrings/nginx-keyring.gpg] https://packages.nginx.org/unit/ubuntu/ focal unit
deb-src [signed-by=/usr/share/keyrings/nginx-keyring.gpg] https://packages.nginx.org/unit/ubuntu/ focal unit

sudo apt install unit-python3.8 installed Python 3.8 language module. So the app for Python 3.8 is running too.