diff -Nur meson-0.62.1/run_tests.py new/run_tests.py
--- meson-0.62.1/run_tests.py	2022-04-23 11:53:34.000000000 +0200
+++ new/run_tests.py	2022-04-23 14:30:53.079730407 +0200
@@ -175,18 +175,10 @@
     Also used by run_unittests.py to determine what meson to run when not
     running in-process (which is the default).
     '''
-    # Is there a meson.py next to the mesonbuild currently in use?
-    mesonbuild_dir = Path(mesonmain.__file__).resolve().parent.parent
-    meson_script = mesonbuild_dir / 'meson.py'
-    if meson_script.is_file():
-        return str(meson_script)
-    # Then if mesonbuild is in PYTHONPATH, meson must be in PATH
-    mlog.warning('Could not find meson.py next to the mesonbuild module. '
-                 'Trying system meson...')
     meson_cmd = shutil.which('meson')
-    if meson_cmd:
+    if meson_cmd and os.path.isfile(meson_cmd):
         return meson_cmd
-    raise RuntimeError(f'Could not find {meson_script!r} or a meson in PATH')
+    raise RuntimeError(f'Could not find meson in PATH')
 
 def get_backend_args_for_dir(backend: Backend, builddir: str) -> T.List[str]:
     '''
@@ -356,12 +348,12 @@
     # Can't pass arguments to unit tests, so set the backend to use in the environment
     env = os.environ.copy()
     if not options.cross:
-        cmd = mesonlib.python_command + ['run_meson_command_tests.py', '-v']
-        if options.failfast:
-            cmd += ['--failfast']
-        returncode += subprocess.call(cmd, env=env)
-        if options.failfast and returncode != 0:
-            return returncode
+        #cmd = mesonlib.python_command + ['run_meson_command_tests.py', '-v']
+        #if options.failfast:
+        #    cmd += ['--failfast']
+        #returncode += subprocess.call(cmd, env=env)
+        #if options.failfast and returncode != 0:
+        #    return returncode
         if no_unittests:
             print('Skipping all unit tests.')
             print(flush=True)