sys-apps/pkgcore: fix sys.prefix testing

Closes: https://bugs.gentoo.org/880693
Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

sys-apps/pkgcore/files/pkgcore-0.12.17-fix-prefix.patch

@@ -0,0 +1,18 @@
+--- a/py_build.py
++++ b/py_build.py
+@@ -28,12 +28,12 @@ def write_pkgcore_lookup_configs(cleanup_files):
+     with open(path, "w") as f:
+         os.chmod(path, 0o644)
+         f.write(textwrap.dedent("""\
+-            from os.path import join, abspath
++            from os.path import abspath, exists, join
+             import sys
+ 
+-            from snakeoil import process
+-
+             INSTALL_PREFIX = abspath(sys.prefix)
++            if not exists(join(INSTALL_PREFIX, 'lib/pkgcore')):
++                INSTALL_PREFIX = abspath(sys.base_prefix)
+             DATA_PATH = join(INSTALL_PREFIX, 'share/pkgcore')
+             CONFIG_PATH = join(DATA_PATH, 'config')
+             LIBDIR_PATH = join(INSTALL_PREFIX, 'lib/pkgcore')

sys-apps/pkgcore/pkgcore-0.12.17-r1.ebuild

@@ -38,20 +38,11 @@ BDEPEND="
 	)
 "
 
-distutils_enable_tests pytest
-
-EPYTEST_DESELECT=(
-	# fail because of forcing Gentoo's prefix
-	tests/ebuild/test_eapi.py::TestEAPI::test_register
-	tests/ebuild/test_eapi.py::TestEAPI::test_is_supported
+PATCHES=(
+	"${FILESDIR}/${PN}-0.12.17-fix-prefix.patch"
 )
 
-src_prepare() {
-	# force Gentoo's prefix
-	sed -e "/INSTALL_PREFIX =/s@= .*\$@= '${EPREFIX}/usr'@" -i py_build.py || die
-
-	distutils-r1_src_prepare
-}
+distutils_enable_tests pytest
 
 python_install_all() {
 	local DOCS=( NEWS.rst )

sys-apps/pkgcore/pkgcore-9999.ebuild

@@ -40,21 +40,8 @@ BDEPEND="
 
 distutils_enable_tests pytest
 
-EPYTEST_DESELECT=(
-	# fail because of forcing Gentoo's prefix
-	tests/ebuild/test_eapi.py::TestEAPI::test_register
-	tests/ebuild/test_eapi.py::TestEAPI::test_is_supported
-)
-
-src_prepare() {
-	# force Gentoo's prefix
-	sed -e "/INSTALL_PREFIX =/s@= .*\$@= '${EPREFIX}/usr'@" -i py_build.py || die
-
-	distutils-r1_src_prepare
-}
-
 python_install_all() {
 	local DOCS=( NEWS.rst )
-	[[ ${PV} == *9999 ]] || doman man/*
+	[[ ${PV} == *9999 ]] || doman build/sphinx/man/*
 	distutils-r1_python_install_all
 }