As mentioned in 'iotests/297: Don't rely on distro-specific linter
binaries', these checks are overly strict. Update them to be in-line
with how we actually invoke the linters themselves.

Signed-off-by: John Snow <js...@redhat.com>
---
 tests/qemu-iotests/297 | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
index 76d6a23f531..b2ad8d1cbe0 100755
--- a/tests/qemu-iotests/297
+++ b/tests/qemu-iotests/297
@@ -18,7 +18,6 @@
 
 import os
 import re
-import shutil
 import subprocess
 import sys
 from typing import List, Mapping, Optional
@@ -84,9 +83,11 @@ def run_linter(
 
 
 def main() -> None:
-    for linter in ('pylint-3', 'mypy'):
-        if shutil.which(linter) is None:
-            iotests.notrun(f'{linter} not found')
+    for linter in ('pylint', 'mypy'):
+        try:
+            run_linter(linter, ['--version'], suppress_output=True)
+        except subprocess.CalledProcessError:
+            iotests.notrun(f"'{linter}' not found")
 
     files = get_test_files()
 
-- 
2.31.1


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