sddm-theme-udt

An SDDM login theme for the unified-desktop-theme (UDT) family. It draws the current wallpaper on every screen, pins the login card to one screen, and takes its colours from the UDT palette, including the wallpaper-snapped accent.

How it is wired

udt-accent, in the UDT repo, writes the live palette to ~/.local/share/udt/sddm-theme.conf on every wallpaper change. Root installs /usr/share/sddm/themes/udt/theme.conf.user as a symlink to that file, which SDDM merges into the theme config at every greeter start. Wallpaper and accent need no root re-run; only theme code changes do.

Set uiScreen in the root-owned theme/theme.conf to pin the login card to a named screen; leave it empty for the primary screen. It does not belong in the generated theme.conf.user, which is overwritten on every wallpaper change.

Install

The theme code is copied by root. UDT's install.sh prints the block; run it in a root shell:

install -d /usr/share/sddm/themes/udt
cp -r <this repo>/theme/. /usr/share/sddm/themes/udt/
ln -sfn ~/.local/share/udt/sddm-theme.conf /usr/share/sddm/themes/udt/theme.conf.user
printf '[Theme]\nCurrent=udt\n' > /etc/sddm.conf.d/udt.conf

Test

sddm-greeter-qt6 --test-mode --theme "$PWD/theme"

License

GPLv2 only. See LICENSE.

Development Approach

This project is developed using AI-assisted tools. Code is generated with the help of AI based on human-provided specifications, design decisions, and iterative feedback.

All contributions are reviewed, tested, and curated by the maintainer before being included in the codebase. AI is used as a productivity and exploration tool, while human oversight remains central to all decisions.

The goal is to combine the flexibility of AI-assisted development with standard open-source practices such as transparency, review, and accountability.