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fix: a desktop Plasma makes after the layout has run gets the classroom's wallpaper

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Tiny Pebbles came through the 0.2.2 upgrade on Plasma's own purple
wallpaper: its desktop was containment 10, made after the layout had run
(most likely the television arriving after a night-time reboot), with no
wallpaper configured. The look and feel's fallback could not catch it,
because it named a file and Plasma only accepts a wallpaper package there.

The fallback is now the EkklesiaClassroom package, whose one image links to
the classroom's picture. classroom-desktop-wallpaper, run before every
plasmashell start, writes the picture into every desktop containment the
file already has: found by plugin, never by number; panels and everything
else byte for byte; a file that is already right not written at all.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
This commit is contained in:
ekklesia
2026-09-29 18:05:44 -05:00
co-authored by Claude Opus 5.5
parent 530f6f6563
commit 7b4ac39cd2
6 changed files with 374 additions and 1 deletions
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tools/build-release.sh
+30
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@@ -176,6 +176,32 @@ install -Dm644 \
"$ROOT/config/wallpapers/classroom-calm.png" \
"$STAGE/usr/share/backgrounds/ekklesia/classroom-calm.png"
# THE SAME PICTURE, AS A WALLPAPER PACKAGE.
#
# The look and feel names this as the default for any desktop Plasma makes
# without the layout, and Plasma only accepts a package there, never a
# file. Its one image is a link to the file above rather than a copy, so
# there is still exactly one picture, and every desktop the layout wrote
# keeps pointing at the path it always has. The name says the image's
# size, because that is how Plasma chooses between a package's images.
WALLPAPER_PACKAGE="$STAGE/usr/share/wallpapers/EkklesiaClassroom"
install -Dm644 \
"$ROOT/config/wallpapers/EkklesiaClassroom/metadata.json" \
"$WALLPAPER_PACKAGE/metadata.json"
wallpaper_size="$(python3 -c '
import struct, sys
with open(sys.argv[1], "rb") as png:
header = png.read(24)
assert header[:8] == b"\x89PNG\r\n\x1a\n" and header[12:16] == b"IHDR"
print("%dx%d" % struct.unpack(">II", header[16:24]))
' "$ROOT/config/wallpapers/classroom-calm.png")"
install -d -m755 "$WALLPAPER_PACKAGE/contents" "$WALLPAPER_PACKAGE/contents/images"
ln -s /usr/share/backgrounds/ekklesia/classroom-calm.png \
"$WALLPAPER_PACKAGE/contents/images/${wallpaper_size}.png"
@@ -466,6 +492,10 @@ install -Dm755 \
"$ROOT/scripts/classroom-desktop-reset" \
"$STAGE/usr/local/bin/classroom-desktop-reset"
install -Dm755 \
"$ROOT/scripts/classroom-desktop-wallpaper" \
"$STAGE/usr/local/bin/classroom-desktop-wallpaper"
install -Dm755 \
"$ROOT/scripts/classroom-theme" \
"$STAGE/usr/local/bin/classroom-theme"