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On colorscheme changed

Rust-based service to listen on DBUS for color scheme changing (e.g. when toggling light/dark mode in the menubar in Gnome 42+), and updating the theme for terminal emulators / terminal editors accordingly.

Usage

Prerequisites:

  • Install rust and cargo. See rust-lang.org/tools/install.

  • You'll need to be running a linux distribution which uses systemd, and where the desktop environment notifies about color scheme changing on D-Bus. I know Gnome does, KDE probably does too 😄

git clone <this repo>
cd on-colorscheme-changed
# open src/main.rs in your favorite editor and adjust the `on_colorscheme_changed` function
# to your liking.

# If you want to run it in the foreground to try it out
cargo run

# If you want to run it in the background with systemd
cargo install --locked --path . # also ensure ~/.cargo/bin is in $PATH
systemctl --user enable ./on-colorscheme-changed.service
# The above command only works nicely on Fedora 39.
# Otherwise you can copy or symlink it to ~/.config/systemd/user
# See https://wiki.archlinux.org/title/Systemd/User 

systemctl --user start on-colorscheme-changed

Blog post

I wrote a blog post about this here.