MAINT: improve error reporting when meson --version fails

mesonpy/__init__.py

@@ -998,13 +998,15 @@ def _get_meson_command(
  # package, however, it may occur that the meson Python package is installed
  # but the corresponding meson command is not available in $PATH. Implement
  # a runtime check to verify that the build environment is setup correcly.
- required_version = _parse_version_string(version)
  try:
- meson_version = subprocess.run(cmd + ['--version'], check=False, text=True, capture_output=True).stdout
+ r = subprocess.run(cmd + ['--version'], text=True, capture_output=True)
  except FileNotFoundError as err:
  raise ConfigError(f'meson executable "{meson}" not found') from err
+ if r.returncode != 0:
+ raise ConfigError(f'Could not execute meson: {r.stderr.strip()}')
+ meson_version = r.stdout.strip()
 
- if _parse_version_string(meson_version) < required_version:
+ if _parse_version_string(meson_version) < _parse_version_string(version):
  raise ConfigError(f'Could not find meson version {version} or newer, found {meson_version}.')
 
  return cmd