31             # Only handle Mercurial-related modules.

    31             # Only handle Mercurial-related modules.

    32             if not fullname.startswith(('mercurial.', 'hgext.', 'hgext3rd.')):

    32             if not fullname.startswith(('mercurial.', 'hgext.', 'hgext3rd.')):

    33                 return None

    33                 return None

    34             # selectors2 is already dual-version clean, don't try and mangle it

    34             # selectors2 is already dual-version clean, don't try and mangle it

    35             if fullname.startswith('mercurial.selectors2'):

    35             if fullname.startswith('mercurial.selectors2'):

    36                 return None

    39                 return None

    37             # zstd is already dual-version clean, don't try and mangle it

    40             # zstd is already dual-version clean, don't try and mangle it

    38             if fullname.startswith('mercurial.zstd'):

    41             if fullname.startswith('mercurial.zstd'):

    39                 return None

    42                 return None

    40             # pywatchman is already dual-version clean, don't try and mangle it

    43             # pywatchman is already dual-version clean, don't try and mangle it