Hi, after investigating the issue once again, I figure that the bug should be reassigned to desktop-base.
IMO it's a desktop-base upgrade issue in case debian-edu-artwork is
already installed and configured.
(And yeah, Debian Edu can't provide an SVG file for this ancient theme.)
To reproduce the issue from a clean state:
(1) apt purge desktop-base
Things should be ok.
(2) apt install debian-edu-artwork-spacefun
Should be ok, too.
(3) apt --reinstall install desktop-base
The error should show up.
After applying the provided patch to:
/var/lib/dpkg/info/desktop-base.postinst
and running 'dpkg --configure desktop-base'
The error should be gone.
--- a/desktop-base.postinst 2017-03-26 12:21:34.917879357 +0200
+++ b/desktop-base.postinst 2017-03-26 12:21:23.427994313 +0200
@@ -35,10 +35,17 @@
EOF
# Use active theme as highest priority for background
+ if ls -al
/usr/share/desktop-base/active-theme/wallpaper/contents/images/1920x1080.png ;
then
+ update-alternatives --install \
+ /usr/share/images/desktop-base/desktop-background \
+ desktop-background \
+
/usr/share/desktop-base/active-theme/wallpaper/contents/images/1920x1080.png 70
+ else
update-alternatives --install \
/usr/share/images/desktop-base/desktop-background \
desktop-background \
/usr/share/desktop-base/active-theme/wallpaper/contents/images/1920x1080.svg 70
+ fi
# Alternatives for the background in theme packages
while read theme filename priority; do
update-alternatives --install \
Wolfgang
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