[Pkg-kde-extras] Bug#1131005: digikam: Icons are empty, missing QT_QPA_PLATFORMTHEME env var

[Peter Gervai]

Package: digikam
Version: 4:8.8.0-2
Severity: normal

Many icons were empty for long time now, but now I got annoyed and started searching.

Turns out that digikam cannot load theme icons without 

export QT_QPA_PLATFORMTHEME=qt6ct

and possibly require qt6ct to set the icon theme.

Without that "pixmap is a null pixmap" litter the console output and icons are empty.

(I don't use KDE.)

-- System Information:
Debian Release: forky/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.17.12+deb14-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages digikam depends on:
ii  digikam-data          4:8.8.0-2
ii  digikam-private-libs  4:8.8.0-2
ii  libc6                 2.42-13
ii  libgcc-s1             15.2.0-14
ii  libkf6configcore6     6.23.0-2
ii  libkf6coreaddons6     6.23.0-1
ii  libkf6i18n6           6.23.0-2
ii  libkf6iconthemes6     6.23.0-1
ii  libmagick++-7.q16-5   8:7.1.2.15+dmo-1
ii  libqt6core6t64        6.9.2+dfsg-4+b1
ii  libqt6gui6            6.9.2+dfsg-4+b1
ii  libqt6sql6            6.9.2+dfsg-4+b1
ii  libqt6sql6-mysql      6.9.2+dfsg-4+b1
ii  libqt6sql6-sqlite     6.9.2+dfsg-4+b1
ii  libqt6widgets6        6.9.2+dfsg-4+b1
ii  libstdc++6            15.2.0-14
ii  perl                  5.40.1-7

Versions of packages digikam recommends:
ii  chromium [www-browser]          146.0.7680.80-1
ii  epiphany-browser [www-browser]  49.2-3
ii  ffmpegthumbs                    4:25.12.0-1
ii  links [www-browser]             2.29-2+b4
ii  lynx [www-browser]              2.9.2-2
ii  surf [www-browser]              2.1+git20250419-1
ii  w3m [www-browser]               0.5.3+git20230121-2.3

Versions of packages digikam suggests:
ii  breeze-icon-theme       4:5.116.0-1
ii  libimage-exiftool-perl  13.50+dfsg-1
ii  systemsettings          4:6.5.4-1

-- no debconf information