[gentoo-dev] RFC: IUSE for system/notification sounds: sound vs. libcanberra vs. notification-sound

[Andreas Sturmlechner <asturm@gentoo.org>]

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It seems we currently have several IUSE for the same purpose, with **sound** probably having oldest mentions[1].
This came up while working on virtual/sound-theme and splitting up media-libs/libcanberra[2], and could be dealt with in the same PR.

- Should we consolidate these into a single IUSE?
- Which one?
- Any other IUSE with the same purpose not listed here?


List of current IUSE consumers below:


sound **global** use flag: - Enable sound support

sound *local* use flags:
	media-libs/libcanberra: Install x11-themes/sound-theme-freedesktop to get sounds on Gnome and Xfce.

	... others, with a different meaning:
		games-board/pysolfc: Enable sound support using dev-python/pygame
		games-roguelike/angband: Enable and install sounds
		games-rpg/drascula: Install optional audio files
		games-strategy/freeciv: Add support for sound provided by media-libs/sdl-mixer
		media-libs/libsdl: Control audio support (disable at your own risk)
		media-libs/libsdl2: Control audio support (disable at your own risk)
		net-im/toxic: [3] Enables audio calling

notification-sound *local* use flags:
	net-im/dino: notification sounds plugin

libcanberra *local* use flags:
	dev-libs/eekboard: Enable support for media-libs/libcanberra
	mail-client/claws-mail: Enable sound notification in connection with USE=notification
	net-irc/hexchat: Enable sound event support using media-libs/libcanberra
 	net-misc/eventd: Enable plugin for sounds via media-libs/libcanberra
	net-p2p/eiskaltdcpp: Enable sound notifications support over libcanberra [...]
	x11-wm/metacity: Enable sound event support using media-libs/libcanberra
	xfce-base/xfce4-settings: Enable sound event support using media-libs/libcanberra
	xfce-extra/xfce4-pulseaudio-plugin: Enable sound event support using media-libs/libcanberra



[1] https://bugs.gentoo.org/323379
[2] https://github.com/gentoo/gentoo/pull/38648
[3] Instead, net-im/toxic uses *audio-notify* for native sound notifications

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