ehooks() {
	################## taken from systemd.eclass ###################
	_systemd_get_dir() {
		[[ ${#} -eq 2 ]] || die "Usage: ${FUNCNAME} <variable-name> <fallback-directory>"
		local variable=${1} fallback=${2} d

		# https://github.com/pkgconf/pkgconf/issues/205
		local -x PKG_CONFIG_FDO_SYSROOT_RULES=1

		if $(tc-getPKG_CONFIG) --exists systemd; then
			d=$($(tc-getPKG_CONFIG) --variable="${variable}" systemd) || die
			d=${d#${EPREFIX}}
		else
			d=${fallback}
		fi

		echo "${d}"
	}

	_systemd_get_userunitdir() {
		_systemd_get_dir systemduserunitdir /usr/lib/systemd/user
	}

	systemd_douserunit() {
		debug-print-function ${FUNCNAME} "${@}"

		(
			insopts -m 0644
			insinto "$(_systemd_get_userunitdir)"
			doins "${@}"
		)
	}
	################################################################

	# 'startx' visible via the XSESSION variable #
	exeinto /etc/X11/Sessions
	newexe "${EHOOKS_FILESDIR}/unity.xsession" unity

	# Set Unity XDG desktop session variables #
	exeinto /etc/X11/xinit/xinitrc.d
	newexe "${EHOOKS_FILESDIR}/15-xdg-data-unity" 15-xdg-data-unity

	# Enables and fills $DESKTOP_SESSION variable for sessions started using 'startx'
	exeinto /etc/X11/xinit/xinitrc.d/
	newexe "${EHOOKS_FILESDIR}/05-unity-desktop-session" 05-unity-desktop-session

	# Start gnome-session using systemd #
	exeinto /usr/libexec
	doexe "${S}/debian/data/run-systemd-session"

	# Install systemd unit files to enable starting desktop sessions via systemd #
	sed -i "s/ --builtin//" "${S}/debian/data/gnome-session.service" || die
	systemd_douserunit "${S}/debian/data/gnome-session.service"
	systemd_douserunit "${S}/debian/data/unity-session.target"

	insinto /etc/lightdm/lightdm.conf.d
	doins "${S}/debian/data/50-unity.conf"

	# Allow Nemo to manage Unity7 desktop and icons #
	sed -i "/NoDisplay/{s/false/true/}" "${S}/debian/data/nemo-unity-autostart.desktop" || die
	insinto /etc/xdg/autostart
	newins "${S}/debian/data/nemo-unity-autostart.desktop" unity-nemo-desktop.desktop
	insinto /usr/share/nemo/actions
	doins "${S}/debian/data/change-background-unity.nemo_action"
	doins "${S}/debian/data/set-as-background-unity.nemo_action"

	# Remove Ubuntu only session files #
	rm "${ED}"/usr/share/wayland-sessions/ubuntu*.desktop
	rm "${ED}"/usr/share/xsessions/ubuntu*.desktop
	rm "${ED}"/usr/share/gnome-session/sessions/ubuntu.session

	# Unity default mimeapps #
	newmenu "${EHOOKS_FILESDIR}/defaults.list" unity-mimeapps.list
}