Error: "listener function for opcode 0 of wl_output is NULL" when running on Wayland

[RayJW]

General description of bug:

In the new version 1.5.5 I run in to this error when running fastfetch on Wayland:

listener function for opcode 0 of wl_output is NULL
[1]    23431 IOT instruction (core dumped)  fastfetch --load-config devinfo 

Often helpful questions:

• Does the issue occur across multiple terminal emulators? [Y/N] Y
• Does the issue occur across multiple shells? (bash, zsh, fish, etc) [Y/N] Y

Output of fastfetch --version:

fastfetch 1.5.5

Output of fastfetch --load-config devinfo:

             /////////////                 [REMOVED]@REMOVED]
         /////////////////////             -------------------
      ///////*767////////////////          OS: Pop!_OS 22.04 [x86_64]
    //////7676767676*//////////////        Host: [REMOVED]
   /////76767//7676767//////////////       Kernel: 5.18.8-051808-generic
  /////767676///*76767///////////////      Uptime: 57 mins
 ///////767676///76767.///7676*///////     Packages: 2582 (dpkg), 5 (snap)
/////////767676//76767///767676////////    Shell: zsh 5.8.1
listener function for opcode 0 of wl_output is NULL
[1]    23431 IOT instruction (core dumped)  fastfetch --load-config devinfo

Output of fastfetch --load-config devinfo-verbose:

             /////////////                 [REMOVED]@[REMOVED]
         /////////////////////             -------------------
      ///////*767////////////////          OS: System: Linux; Name: Pop!_OS; Pr4
    //////7676767676*//////////////        Host: Family: "product_family: 103C_P
   /////76767//7676767//////////////       Kernel: Sysname: Linux; Release: 5.12
  /////767676///*76767///////////////      Uptime: Days: 0; Hours: 1; Minutes: 5
 ///////767676///76767.///7676*///////     Processes: Count: 1030
/////////767676//76767///767676////////    Packages: All: 2587; pacman: 0; pacm0
//////////76767676767////76767/////////    Shell: Process name: zsh; Process pa1
listener function for opcode 0 of wl_output is NULL
[1]    33424 IOT instruction (core dumped)  fastfetch --load-config devinfo-vere

Output of fastfetch --list-features:

libpci
vulkan
wayland
xcb
xrandr
x11
gio
dconf
dbus
zlib
xfconf
sqlite3
egl
glx

I removed some personal information with [REMOVED] put those things are output as expected. The package was installed via Pacstall.

[RayJW]

I just realized that this is fixed by using the deb package instead of the Pacstall install. I'm sorry for not checking this earlier. I will leave it open for now, in case this error has any other implications. Feel free to close it if this is unrelated to fastfetch at all.

[LinusDierheimer]

That is really interesting, because most of my listeners on wl_output are NULL. According to the wayland docs, they just should never be called. I will create stub listeners, so this can't happen again.

I have no idea what is different between the pacstall and deb install, if you have any idea please tell me.

[LinusDierheimer]

Should be fixed now. But tbh i don't know why the dep package works and the pacstall doesn't. They should contain the same code...

Can you please test if git master works with pacstall?

[RayJW]

I just checked, and both versions now work as expected again. Sadly, I do not have any further insight on what could be causing the two to behave differently. I'm sorry… but thank you for fixing it :)