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bypy/macos: use ULMO

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ULMO, available in 10.15+, uses LZMA compression, which is both stronger and faster than the deprecated bzip2 (UDBZ).
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Mingye Wang 2024-08-13 10:58:35 +08:00 committed by GitHub
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commit 43ae7c6a54
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bypy/macos/__main__.py
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@ -801,8 +801,8 @@ class Freeze:
print('Signing completed in %d minutes %d seconds' % tuple(times))
os.symlink('/Applications', join(tdir, 'Applications'))
size_in_mb = int(subprocess.check_output(['du', '-s', '-k', tdir]).decode('utf-8').split()[0]) / 1024.
# UDBZ gives the best compression, better than ULFO
cmd = ['/usr/bin/hdiutil', 'create', '-srcfolder', tdir, '-volname', volname, '-format', 'UDBZ']
# ULMO (10.15+) gives the best compression, better than ULFO and better+faster than UDBZ
cmd = ['/usr/bin/hdiutil', 'create', '-srcfolder', tdir, '-volname', volname, '-format', 'ULMO']
if 190 < size_in_mb < 250:
# We need -size 255m because of a bug in hdiutil. When the size of
# srcfolder is close to 200MB hdiutil fails with