Tracks Perplexity's own Debian repository, the feed the app updates
itself from, via .omarchy/upstream.sh -- same shape as
openai-codex-desktop. pkgver carries the build number from the pool
filename because the index's Version field drops it and upstream
rebuilds under the same marketing version; the pool wants the '+'
percent-encoded. The launcher replaces the postinst symlink pacman
never creates and defaults Chromium to Wayland.
dhh