Not able to create pipe files in /dev with supervisor-2021.02.6

Describe the issue you are experiencing

With the change of device handling in the supervisor update to 2021.02.6 the pigpio addon of mine stopped working. Now it can’t create its pipe devices /dev/pigerr and /dev/pigpio from inside the addon.

2021-02-10 01:01:16 myCreatePipe: Can't set permissions (434) for /dev/pigpio, No such file or directory
2021-02-10 01:01:16 pthFifoThread: fopen /dev/pigpio failed(No such file or directory)

Is there a way to allow specific device creation? Or create them beforehand?

What is the used version of the Supervisor?

supervisor-2021.02.6

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

What is the version of your installed operating system?

5.11

What version of Home Assistant Core is installed?

core-2021.2.2

Steps to reproduce the issue

1. Install addon
2. Logs state missing pipe files

Anything in the Supervisor logs that might be useful for us?

No response

[Poeschl]

Just an idea:

Would it be possible to map the devices in /dev separately instead of the the whole /dev folder? That way, the host devices would be mounted ro like now, but the addons could create their own independent devices there.

[Poeschl]

Also most addons which are just a wrapper around existing software have no possibility to change the way the internal software works.