media-sound/cadence: general overhaul

Detailed Changes:
- reduce the diff to upstream ebuild
  - add jack_capture
  - add python3_7
  - update to EAPI 7
  - undo catarina removal
  - drop gnome icon fix
- add python3_8
- add shebang fix
- add better desktop entries for claudia
- enable installation on Gentoo prefix (not tested)
- drop revision for live ebuild

Signed-off-by: Gerion Entrup <gerion.entrup@flump.de>

media-sound/cadence/cadence-9999.ebuild

@@ -0,0 +1,86 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{6,7,8} )
+inherit git-r3 python-single-r1 xdg desktop
+
+DESCRIPTION="Collection of tools useful for audio production"
+HOMEPAGE="http://kxstudio.linuxaudio.org/Applications:Cadence"
+EGIT_REPO_URI="https://github.com/falkTX/Cadence.git"
+KEYWORDS=""
+LICENSE="GPL-2"
+SLOT="0"
+
+IUSE="a2jmidid ladish -pulseaudio opengl"
+
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+CDEPEND="
+	${PYTHON_DEPS}
+	$(python_gen_cond_dep '
+		dev-python/dbus-python[${PYTHON_MULTI_USEDEP}]
+		dev-python/PyQt5[dbus,gui,opengl?,svg,widgets,${PYTHON_MULTI_USEDEP}]
+	')
+	media-sound/jack2[dbus]
+	media-sound/jack_capture
+	a2jmidid? ( media-sound/a2jmidid[dbus] )
+	ladish? ( >=media-sound/ladish-9999 )
+	pulseaudio? ( media-sound/pulseaudio[jack] )
+"
+RDEPEND="${CDEPEND}"
+DEPEND="${RDEPEND}"
+
+src_prepare() {
+	sed -i -e "s/python3/${EPYTHON}/" \
+		data/cadence \
+		data/cadence-aloop-daemon \
+		data/cadence-jacksettings \
+		data/cadence-logs \
+		data/cadence-render \
+		data/cadence-session-start \
+		data/catarina \
+		data/catia \
+		data/claudia \
+		data/claudia-launcher || die "sed failed"
+
+	default
+}
+
+src_compile() {
+	myemakeargs=(PREFIX="${EPREFIX}/usr"
+		SKIP_STRIPPING=true
+	)
+
+	emake "${myemakeargs[@]}"
+}
+
+src_install() {
+	emake PREFIX="${EPREFIX}/usr" DESTDIR="${ED}" install
+
+	python_fix_shebang ${ED}
+
+	# Clean up stuff that shouldn't be installed
+	rm -rf "${ED}"/etc/X11/xinit/xinitrc.d/61cadence-session-inject
+	rm -rf "${ED}"/etc/xdg/autostart/cadence-session-start.desktop
+	rm -rf "${ED}"/usr/share/applications/*.desktop
+
+	if use !pulseaudio; then
+		rm -rf "${ED}"/usr/bin/cadence-pulse2{jack,loopback}
+		rm -rf "${ED}"/usr/share/cadence/pulse2{jack, loopback}
+	fi
+	if use !ladish; then
+		rm -rf "${ED}"/usr/bin/claudia{,-launcher}
+		rm -rf "${ED}"/usr/share/cadence/icons/claudia-hicolor/
+	fi
+
+	# Replace desktop entries with QA issues with these
+	make_desktop_entry cadence Cadence cadence "AudioVideo;AudioVideoEditing;Qt"
+	make_desktop_entry catia Catia catia "AudioVideo;AudioVideoEditing;Qt"
+	if use ladish; then
+		make_desktop_entry claudia Claudia claudia "AudioVideo;AudioVideoEditing;Qt"
+		make_desktop_entry claudia-launcher "Claudia Launcher" claudia-launcher "AudioVideo;AudioVideoEditing;Qt"
+	fi
+	make_desktop_entry catarina Catarina catarina "AudioVideo;AudioVideoEditing;Qt"
+}