[BUG] DietPi incorrectly displayed as Raspberry Pi OS by default

[CTRL-panino]

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• I have checked the FAQ but the issue is not covered

Description

I am using the latest version of DietPi (DietPi 9.13 based on Debian 12).

Previously, in Fastfetch 2.45.0, the OS module displayed Debian GNU/Linux by default.
However, since version 2.46.0, it now shows Raspberry Pi OS.

In my opinion, neither of these options is accurate: I think it would be best to display DietPi (it already has a built-in logo in Fastfetch, too).
If that’s not feasible, Debian GNU/Linux would be a more accurate default representation than Raspberry Pi OS (because DietPi is strongly based on Debian).

Version used

2.46.0

Bug prevalence

Always

Regression

Yes

Installation

GitHub Releases

Screenshots

Fastfetch 2.45.0

Fastfetch 2.46.0

System information

{
    "type": "OS",
    "result": {
      "buildID": "",
      "codename": "bookworm",
      "id": "raspbian",
      "idLike": "debian",
      "name": "Raspberry Pi OS",
      "prettyName": "Raspberry Pi OS",
      "variant": "",
      "variantID": "",
      "version": "12 (bookworm)",
      "versionID": "12"
    },
    "stat": 0.15441083908081055
  },

Features built-in

threads
vulkan
wayland
xcb-randr
xrandr
drm
drm_amdgpu
gio
dconf
dbus
imagemagick7
imagemagick6
chafa
zlib
xfconf
sqlite3
rpm
egl
glx
opencl
libpulse
libddcutil
libelf
libzfs
Directx Headers
linux/videodev2
linux/wireless
Embedded pciids

[CarterLi]

You should prove that you use DietPi.

[CTRL-panino]

Ok, how do I prove it?

[CarterLi]

For example: 'Raspberry Pi OS' uses a custom Linux kernel whose version string contains +rpt-rpi-.

If DietPi has something similar which fastfetch can check, I'm ok to fix this issue.

[CTRL-panino]

I can create a post in the Discussions tab of the DietPi GitHub page and, if I receive any suggestions, I'll reach out to you again.
Let me know if that works for you.

[CarterLi]

It's up to you.

Please reopen this issue when you find something.

[CTRL-panino]

Hi @CarterLi,
This is the answer I received.
So, according to this answer, the Fastfetch output until 2.45.0 (Debian GNU/Linux) was correct.
The "new" 2.46.0 behaviour (Raspberry Pi OS) is not.

Also, if it sounds reasonable to specify that the machine is running DietPi (for example, as an option in the custom format), the file /boot/dietpi/.version could be used.

[CarterLi]

Upload /boot/dietpi/.version please.

[CTRL-panino]

This is the output for DietPi 9.14.2

root@DietPi:~# cat /boot/dietpi/.version

G_DIETPI_VERSION_CORE=9
G_DIETPI_VERSION_SUB=14
G_DIETPI_VERSION_RC=2
G_GITBRANCH='master'
G_GITOWNER='MichaIng'

[Joulinar]

So, according to this answer, the Fastfetch output until 2.45.0 (Debian GNU/Linux) was correct.
The "new" 2.46.0 behaviour (Raspberry Pi OS) is not.

It just depends on how you look at the whole thing. Yes, it is a Debian on the RPI. But as far as I understand, Fastfetch looks at the kernel used. And that is the RPI's own original kernel. Therefore the system is recognized as RPI OS. Which is basically a Debian with a RPI kernel 😄

[CarterLi]

@CTRL-panino Please test

[CarterLi]

I wonder if RPIOS has similar file for users to parse. If so, we can get its OS version too.

@darkexplosiveqwx @XhmikosR Any idea?

[XhmikosR]

AFAICT, no. It's just Debian. I would personally just revert the change if there's no other reliable way of identifying Raspberry Pi OS.