2448             if re.match(b'#!.*python', initial):

  2448             if re.match(b'#!.*python', initial):

  2449                 self._pythondir = self._bindir

  2449                 self._pythondir = self._bindir

  2450             # If it looks like our in-repo Rust binary, use the source root.

  2450             # If it looks like our in-repo Rust binary, use the source root.

  2451             # This is a bit hacky. But rhg is still not supported outside the

  2451             # This is a bit hacky. But rhg is still not supported outside the

  2452             # source directory. So until it is, do the simple thing.

  2452             # source directory. So until it is, do the simple thing.

  2454                 self._pythondir = os.path.dirname(self._testdir)

  2454                 self._pythondir = os.path.dirname(self._testdir)

  2455             # Fall back to the legacy behavior.

  2455             # Fall back to the legacy behavior.

  2456             else:

  2456             else:

  2457                 self._pythondir = self._bindir

  2457                 self._pythondir = self._bindir

  2458 

  2458