dev-python/loky: Fix tests with newer CPython

Fix test failure with newer versions of CPython due to incorrect loading
of libc via ctypes.

Closes: https://bugs.gentoo.org/774789
Signed-off-by: Michał Górny <mgorny@gentoo.org>

2 files changed, 33 insertions, 1 deletions

diff --git a/dev-python/loky/files/loky-2.9.0-libc.patch b/dev-python/loky/files/loky-2.9.0-libc.patch
new file mode 100644
index 000000000000..58cceab01eb2
--- /dev/null
+++ b/dev-python/loky/files/loky-2.9.0-libc.patch
@@ -0,0 +1,28 @@
+From 4100bb481dd1599be3deae8539ff9eac2d9b7104 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
+Date: Mon, 8 Mar 2021 10:32:38 +0100
+Subject: [PATCH] FIX load libc correctly in test_reusable_executor
+
+Fix test_reusable_executor to load libc via "c" library rather than
+"libc".  The latter is incorrect, and does not work in the newest
+versions of Python anymore, see https://bugs.python.org/issue42580.
+---
+ tests/test_reusable_executor.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/test_reusable_executor.py b/tests/test_reusable_executor.py
+index 1ff5b8b..d24d2de 100644
+--- a/tests/test_reusable_executor.py
++++ b/tests/test_reusable_executor.py
+@@ -32,7 +32,7 @@ if sys.platform == "win32":
+ else:
+     from signal import SIGKILL
+     from ctypes.util import find_library
+-    libc = ctypes.CDLL(find_library("libc"))
++    libc = ctypes.CDLL(find_library("c"))
+ 
+ 
+ try:
+-- 
+2.30.1
+
diff --git a/dev-python/loky/loky-2.9.0.ebuild b/dev-python/loky/loky-2.9.0.ebuild
index 70165402b043..a4096ef4abeb 100644
--- a/dev-python/loky/loky-2.9.0.ebuild
+++ b/dev-python/loky/loky-2.9.0.ebuild
@@ -25,6 +25,10 @@ BDEPEND="
 
 distutils_enable_tests pytest
 
+PATCHES=(
+	"${FILESDIR}"/${P}-libc.patch
+)
+
 python_test() {
 	local args=(
 		# docker, seriously?
@@ -34,5 +38,5 @@ python_test() {
 		--skip-high-memory
 	)
 
-	pytest -vv "${args[@]}" || die "Tests failed on ${EPYTHON}"
+	epytest "${args[@]}"
 }