From 756ea32e068e60ece210561edc2dee523826f472 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miro=20Hron=C4=8Dok?= <miro@hroncok.cz>
Date: Fri, 12 Feb 2021 12:22:20 +0100
Subject: [PATCH] Don't access other enum members from self

This is deprecated in Python 3.10.
Instead, acces them from the class.

Fixes https://github.com/mesonbuild/meson/issues/8318
---
 mesonbuild/backend/backends.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py
index ecd506789d..743574b110 100644
--- a/mesonbuild/backend/backends.py
+++ b/mesonbuild/backend/backends.py
@@ -69,11 +69,12 @@ def from_str(cls, string: str) -> 'TestProtocol':
         raise MesonException('unknown test format {}'.format(string))
 
     def __str__(self) -> str:
-        if self is self.EXITCODE:
+        cls = type(self)
+        if self is cls.EXITCODE:
             return 'exitcode'
-        elif self is self.GTEST:
+        elif self is cls.GTEST:
             return 'gtest'
-        elif self is self.RUST:
+        elif self is cls.RUST:
             return 'rust'
         return 'tap'