Not working in Fedora 42

[lucasmz-dev]

Describe the bug
The tool does not seem to work under F42, as it can not get the colours from the wallpaper

To Reproduce
Steps to reproduce the behavior:

1. Use Fedora 42
2. Try to use KDE Material You Colors

Expected behavior
To work fine in F42

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• Operating System: Fedora Linux 42
• KDE Plasma Version: 6.3.4
• KDE Frameworks Version: 6.13.0
• Qt Version: 6.8.2
• Kernel Version: 6.14.2-300.fc42.x86_64 (64-bit)
• Graphics Platform: Wayland

Additional context
Here's some error logs:

lucas@fedora:~$ kde-material-you-colors
[D] utils: kill_existing: Found previous process in PID file: '10404' killing...
[I] main: main: ###### STARTED NEW SESSION v1.10.0 ######
[D] main: main: Installed in /usr/lib/python3.13/site-packages/kde_material_you_colors
[D] config: eval_conf: Config "iconslight": empty, using fallback: None
[D] config: eval_conf: Config "iconsdark": empty, using fallback: None
[D] config: eval_conf: Config "on_change_hook": empty, using fallback: None
[D] config: eval_conf: Config "color": empty, using fallback: None
[D] config: eval_conf: Config "custom_colors_list": empty, using fallback: None
[D] config: eval_conf: Config "darker_window_list": empty, using fallback: None
[D] main: main: {'light': False, 'file': None, 'monitor': 0, 'ncolor': 1, 'iconslight': None, 'iconsdark': None, 'pywal': True, 'pywal_light': False, 'light_blend_multiplier': 1, 'dark_blend_multiplier': 1, 'on_change_hook': None, 'sierra_breeze_buttons_color': False, 'disable_konsole': False, 'titlebar_opacity': 100, 'titlebar_opacity_dark': 100, 'toolbar_opacity': 100, 'toolbar_opacity_dark': 100, 'konsole_opacity': 100, 'konsole_opacity_dark': 100, 'konsole_blur': False, 'color': None, 'klassy_windeco_outline': False, 'custom_colors_list': None, 'darker_window_list': None, 'use_startup_delay': False, 'startup_delay': 0, 'plasma_follows_scheme': False, 'pywal_follows_scheme': False, 'main_loop_delay': 1.0, 'screenshot_delay': 900.0, 'once_after_change': False, 'pause_mode': False, 'screenshot_only_mode': False, 'scheme_variant': 2, 'chroma_multiplier': 1.1, 'tone_multiplier': 0.5, 'qdbus_executable': None, 'manual_fetch': False, 'fetch_colors': False}
[E] main: main: Could not get wallpaper Could not get compatible image from plugin org.kde.image, using screenshot method
[I] main: main: Wallpaper: org.kde.image (color): #ffffff
[E] m3_scheme_utils: get_material_you_colors: Error trying to get colors from #ffffff: float division by zero
Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 199, in get_material_you_colors
    theme = themeFromSourceColor(
        argbFromHex(source_color), scheme_variant, chroma_mult, tone_mult
    )
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 119, in themeFromSourceColor
    scheme = getScheme(scheme_variant, source, False, 0)
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 93, in getScheme
    return scheme_class(source, isDark, contrastLevel)
  File "/usr/lib64/python3.13/site-packages/materialyoucolor/scheme/scheme_fidelity.py", line 25, in __init__
    TemperatureCache(source_color_hct).complement()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/site-packages/materialyoucolor/temperature/temperature_cache.py", line 134, in complement
    relative_temp = (
                    ~
        self.temps_by_hct[possible_answer] - coldest_temp
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    ) / range_temp
    ~~^~~~~~~~~~~~
ZeroDivisionError: float division by zero

[luisbocanegra]

Hi, the Fedora 42 version is now building correctly in openSUSE Build Service tested it myself in a VM and it seems to be working correctly.

Can you try uninstalling the current version, removing the Fedora 41 repository and adding the 42 one?

Try these commands:

sudo dnf remove kde-material-you-colors
sudo rm /etc/yum.repos.d/home:luisbocanegra.repo
sudo dnf config-manager addrepo --from-repofile=https://download.opensuse.org/repositories/home:luisbocanegra/Fedora_42/home:luisbocanegra.repo
sudo dnf install kde-material-you-colors

[lucasmz-dev]

I still seem to not be able to get it to work? :(

[E] m3_scheme_utils: get_material_you_colors: Error trying to get colors from #ffffff: float division by zero
Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 199, in get_material_you_colors
    theme = themeFromSourceColor(
        argbFromHex(source_color), scheme_variant, chroma_mult, tone_mult
    )
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 119, in themeFromSourceColor
    scheme = getScheme(scheme_variant, source, False, 0)
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 93, in getScheme
    return scheme_class(source, isDark, contrastLevel)
  File "/usr/lib64/python3.13/site-packages/materialyoucolor/scheme/scheme_fidelity.py", line 25, in __init__
    TemperatureCache(source_color_hct).complement()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/site-packages/materialyoucolor/temperature/temperature_cache.py", line 134, in complement
    relative_temp = (
                    ~
        self.temps_by_hct[possible_answer] - coldest_temp
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    ) / range_temp
    ~~^~~~~~~~~~~~
ZeroDivisionError: float division by zero
``

[lucasmz-dev]

Oh wait, it does work now. It doesn't seem to work with Fedora 42's wallpaper, though...

[lucasmz-dev]

Huh! but it does when I download the image and set it manually! What is going on!

[luisbocanegra]

I still seem to not be able to get it to work? :(

[E] m3_scheme_utils: get_material_you_colors: Error trying to get colors from #ffffff: float division by zero
Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 199, in get_material_you_colors
    theme = themeFromSourceColor(
        argbFromHex(source_color), scheme_variant, chroma_mult, tone_mult
    )
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 119, in themeFromSourceColor
    scheme = getScheme(scheme_variant, source, False, 0)
  File "/usr/lib/python3.13/site-packages/kde_material_you_colors/utils/m3_scheme_utils.py", line 93, in getScheme
    return scheme_class(source, isDark, contrastLevel)
  File "/usr/lib64/python3.13/site-packages/materialyoucolor/scheme/scheme_fidelity.py", line 25, in __init__
    TemperatureCache(source_color_hct).complement()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib64/python3.13/site-packages/materialyoucolor/temperature/temperature_cache.py", line 134, in complement
    relative_temp = (
                    ~
        self.temps_by_hct[possible_answer] - coldest_temp
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    ) / range_temp
    ~~^~~~~~~~~~~~
ZeroDivisionError: float division by zero
``

I tried setting the color manually to #ffffff and it doesn't cause division by zero error you have

If you have the default wallpaper the only way to get colors from it is by taking a screenshot of the desktop, and apparently the screenshot returned a white color???

[E] main: main: Could not get wallpaper Could not get compatible image from plugin org.kde.image, using screenshot method
[I] main: main: Wallpaper: org.kde.image (color): #ffffff

[lucasmz-dev]

Honestly happy enough it worked after just downloading the wallpaper manually
my system is somewhat hardened, maybe it's something there?

[luisbocanegra]

Oh wait, it does work now. It doesn't seem to work with Fedora 42's wallpaper, though...

Huh! but it does when I download the image and set it manually! What is going on!

Yes this is expected because the image is stored in the configuration, but the default one is not stored there, so it fallbacks to taking a screenshot of the desktop. And apparently it failed to take a correct image and returned white image, or took a correct screenshot but was unable to extract colors from it.

If you open the captured image is it actually a screenshot of your wallpaper?

xdg-open /tmp/kde-material-you-colors-desktop-screenshot-$(whoami).png

[lucasmz-dev]

It just complains that the image doesn't exist.

[luisbocanegra]

Honestly happy enough it worked after just downloading the wallpaper manually my system is somewhat hardened, maybe it's something there?

It's usually just a matter of switching to a different wallpaper and back to the default one doing so causes Plasma to store it.

[luisbocanegra]

It just complains that the image doesn't exist.

That's strange, if you enable the screenshot only mode does it create it?

[luisbocanegra]

Honestly happy enough it worked after just downloading the wallpaper manually my system is somewhat hardened, maybe it's something there?

Could be, but I would expect to see an error either taking a the screenshot or opening it, and neither seemed to happen in your log.

Maybe is some edge case that should be fixed, will have to try on a clean linux user account to see if I get the same