media-sound/jack-keyboard: import from gentoo tree

media-sound/jack-keyboard/files/jack-keyboard-2.7.2-man.patch

@@ -0,0 +1,10 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index d5b7c98..3a9a280 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -68,4 +68,4 @@ target_link_libraries(jack-keyboard -lm)
+ install(TARGETS jack-keyboard RUNTIME DESTINATION bin)
+ install(FILES pixmaps/jack-keyboard.png DESTINATION share/pixmaps)
+ install(FILES src/jack-keyboard.desktop DESTINATION share/applications)
+-install(FILES man/jack-keyboard.1 DESTINATION man/man1)
++install(FILES man/jack-keyboard.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)

media-sound/jack-keyboard/jack-keyboard-2.7.2-r1.ebuild

@@ -0,0 +1,43 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake xdg
+
+DESCRIPTION="A virtual MIDI keyboard for JACK MIDI"
+HOMEPAGE="http://pin.if.uz.zgora.pl/~trasz/jack-keyboard/"
+SRC_URI="mirror://sourceforge/${PN}/${PN}/${PV}/${P}.tar.gz"
+
+LICENSE="public-domain"
+SLOT="0"
+KEYWORDS="amd64 x86"
+IUSE="lash X"
+
+CDEPEND="
+	dev-libs/glib:2
+	virtual/jack
+	x11-libs/gtk+:2
+	lash? ( media-sound/lash )
+	X? ( x11-libs/libX11 )
+"
+DEPEND="${CDEPEND}"
+RDEPEND="${CDEPEND}"
+
+PATCHES=(
+	"${FILESDIR}/${P}-man.patch"
+)
+
+src_prepare() {
+	cmake_src_prepare
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DJackEnable=ON # though configurable, does not compile withou jack
+		-DLashEnable=$(usex lash)
+		-DX11Enable=$(usex X)
+	)
+
+	cmake_src_configure
+}