On Mac OS 10.14, using either Frescobaldi 3.1.2 or directly with the Lilypond
app (32-bit versions):
when attempting to convert from v2.19.x to 2.21.x
\version "2.19.83"
\relative {
c' d e f g a b c
}
the following error message is generated:
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Traceback (most recent call last):
File "/Applications/LilyPond_2.21.4..app/Contents/Resources/bin/convert-ly",
line 86, in <module>
import convertrules
File
"/Applications/LilyPond_2.21.4..app/Contents/Resources/share/lilypond/current/python/convertrules.py",
line 26, in <module>
import lilylib
File
"/Applications/LilyPond_2.21.4..app/Contents/Resources/share/lilypond/current/python/lilylib.py",
line 30, in <module>
sys.stdin = codecs.getreader('utf8')(sys.stdin.detach())
AttributeError: 'file' object has no attribute 'detach'
The document has not been changed.
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Sorry if this is an old question or known issue- I did look for an answer.
