dev-python/python-evdev: specify header locations, EAPI 7

setup.py hardcodes /usr/include/linux/... paths. This doesn't work if
cross-compiling or otherwise using a different $ROOT with a different
set of headers, as the setup stage might pick up one set of headers,
while the compilation might pick up another.

Fortunately, setup.py supports an --evdev-headers arg so we can fix
this. Let's use it.

At the same time, bump to EAPI 7 to support ${SYSROOT}.

Tested with pytest -- 1 existing test_uinput.py (test_abs_values())
failed before and after this change.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/9978

dev-python/python-evdev/python-evdev-0.7.0-r1.ebuild

@@ -0,0 +1,24 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+PYTHON_COMPAT=( python{2_7,3_4,3_5,3_6} )
+
+inherit distutils-r1
+
+DESCRIPTION="Python library for evdev bindings"
+HOMEPAGE="https://python-evdev.readthedocs.org/"
+SRC_URI="https://github.com/gvalkov/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~x86"
+IUSE=""
+
+DEPEND="dev-python/setuptools[${PYTHON_USEDEP}]"
+
+python_compile() {
+	distutils-r1_python_compile build_ecodes \
+		--evdev-headers \
+		"${SYSROOT}"/usr/include/linux/input.h:"${SYSROOT}"/usr/include/linux/input-event-codes.h
+}