libc.so.6: version `GLIBC_2.34' not found (required by /var/run/host/bin/xprop)

[tux-ware]

Hello @bluesabre : )

All the commands listed below work in both "GNOME on Xorg" as well as in a default "Wayland" session on Fedora 36.

I wrote a couple of one-liner scripts to start GIMP with a dark bar and a VLC with Adwaita-Dark style, complemented by dark GTK bar on top : ) I experimented with xprop and xdotool, because Darkbar flatpak did not work for me. I hope you will find a way to integrate it, so we can use Darkbar flatpak with both Xorg and Wayland sessions on Fedora and other distros : )

Below are the notes from my experiments.

Cheers!

I have installed Darkbar on Fedora 36 via elementary flatpak repo.

[dave@fedora ~]$ flatpak list | grep -i darkbar
Darkbar	com.github.bluesabre.darkbar		stable	repo	system

When I launch Darkbar from terminal, it starts, but I am getting multiple "libc.so.6: version `GLIBC_2.34' not found..." messages:

[dave@fedora ~]$ flatpak run com.github.bluesabre.darkbar
Gtk-Message: 14:44:01.242: Failed to load module "canberra-gtk-module"
Gtk-Message: 14:44:01.242: Failed to load module "pk-gtk-module"
Gtk-Message: 14:44:01.243: Failed to load module "canberra-gtk-module"
Gtk-Message: 14:44:01.243: Failed to load module "pk-gtk-module"
/var/run/host/bin/xprop: /usr/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by /var/run/host/bin/xprop)
/var/run/host/bin/xprop: /usr/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by /var/run/host/bin/xprop)
/var/run/host/bin/xprop: /usr/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by /var/run/host/bin/xprop)

I have glibc-2.35 installed, as well as xprop and other x-related tools:

[dave@fedora ~]$ dnf info glibc.x86_64 | head
Last metadata expiration check: 0:00:43 ago on Tue 10 May 2022 03:15:57 PM CEST.
Installed Packages
Name         : glibc
Version      : 2.35
Release      : 5.fc36
Architecture : x86_64
Size         : 6.9 M
Source       : glibc-2.35-5.fc36.src.rpm
Repository   : @System
From repo    : updates-testing

[dave@fedora ~]$ which xdotool xprop xwininfo
/usr/bin/xdotool
/usr/bin/xprop
/usr/bin/xwininfo

I wanted to have my GIMP with a dark bar at the top, so I started to experiment with xprop:

# below commands will wait for pointing and clicking some window with a mouse
xprop  -f _GTK_THEME_VARIANT 8u  -set _GTK_THEME_VARIANT  dark
xprop  -f _GTK_THEME_VARIANT 8u  -set _GTK_THEME_VARIANT  light

The xprop command can set various properties directly (without mouse), based on the window-id or window-name. It did not work for me with the -name option though, so I tried with -id option, and it worked as expected:

# xwininfo will wait for pointing and clicking some window with a mouse
xwininfo
xwininfo      | grep 'id: ' | cut -d' ' -f4
xwininfo -int | grep 'id: ' | cut -d' ' -f4

# xdotool can find window ID without using the mouse
xdotool search --onlyvisible --class gimp
xdotool search --onlyvisible --name "GNU Image Manipulation Program" 

Once I had a way to find window ID with xdotool, I combined it with xprop:

xprop  -f _GTK_THEME_VARIANT 8u  -id $( xdotool search --onlyvisible --class gimp )  -set _GTK_THEME_VARIANT  dark
xprop  -f _GTK_THEME_VARIANT 8u  -id $( xdotool search --onlyvisible --class gimp )  -set _GTK_THEME_VARIANT  light

xprop  -f _GTK_THEME_VARIANT 8u  -id $( xdotool search --onlyvisible --name "GNU Image Manipulation Program" )  -set _GTK_THEME_VARIANT  dark
xprop  -f _GTK_THEME_VARIANT 8u  -id $( xdotool search --onlyvisible --name "GNU Image Manipulation Program" )  -set _GTK_THEME_VARIANT  light

The above commands need to run after the GIMP has started. On my laptop it starts in under 2 seconds, so I wrote a one-liner:

# start GIMP in the background (&), get the main window ID and set _GTK_THEME_VARIANT with xprop command

gimp  &  sleep 2  &&  ID=$( xdotool search --onlyvisible --class gimp )  &&  xprop  -f _GTK_THEME_VARIANT 8u  -id $ID  -set _GTK_THEME_VARIANT  dark

gimp  &  sleep 2  &&  ID=$( xdotool search --onlyvisible --name "GNU Image Manipulation Program" )  &&  xprop  -f _GTK_THEME_VARIANT 8u  -id $ID  -set _GTK_THEME_VARIANT  dark

You can run VLC in a similar fashion, but as it starts almost instantly, it is enough to use the --sync option and skip sleeping:

# sudo dnf install adwaita-qt5 (provides Adwaita-Dark style)

QT_STYLE_OVERRIDE=Adwaita-Dark  vlc  &  ID=$( xdotool search --sync --onlyvisible --class vlc )  &&  xprop  -f _GTK_THEME_VARIANT 8u  -id $ID  -set _GTK_THEME_VARIANT  dark

QT_STYLE_OVERRIDE=Adwaita-Dark  vlc  &  ID=$( xdotool search --sync --onlyvisible --name "VLC media player" )  &&  xprop  -f _GTK_THEME_VARIANT 8u  -id $ID  -set _GTK_THEME_VARIANT  dark

[bluesabre]

Thanks for this! I'll experiment with it and see if I can get it working.

[bluesabre]

It's coming along nicely! Right now it's working sometimes (and crashing more than anything), but I should be able to clean that up in the next few days.

#13

https://www.youtube.com/watch?v=Wf8v02X2btM

[bluesabre]

The branch is now working completely without crashing. Thanks for the tips on adding Wayland support! I've got a bit more work to do to ensure that support carries over to Wayland, but this is otherwise done.

[bluesabre]

GLIBC_2.34 error fixed and Wayland support added in main!