macosx: fixing macOS version generation after db9d1dd01bf0...
macosx: fixing macOS version generation after
db9d1dd01bf0
With the Python3 change, the string is now something like
version = b'4.6.2+848-88be288e8ac1'
where it was previously just:
version = '4.6.2+848-88be288e8ac1'
Differential Revision:
https://phab.mercurial-scm.org/D3964