Re: convert-ly broken in 2.21.x?

[Stanton Sanderson]

> On Aug 7, 2020, at 5:31 PM, David Kastrup <dak@gnu.org> wrote:
> 
> Stanton Sanderson <stansand@gmail.com> writes:
> 
>>> On Aug 7, 2020, at 3:31 PM, David Kastrup <dak@gnu.org> wrote:
>>> 
>>> Stanton Sanderson <stansand@gmail.com> writes:
>>> 
>>>> I have had no response to my previous post, so I will try again.
>>>> 
>>>> On Mac OS 10.14.6 (Mojave), running LilyPond directly from the application 
>>>> and using Update Syntax” from the “Compile” menu, applying it to the 
>>>> “Welcome to Lilypond” file after renaming it “test 1.ly”, the following 
>>>> error message is produced:
>>>> 
>>>> ---------
>>>> 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'
>>>> ————
>>>> 
>>>> I saw the same behavior with 2.21.1 and 2.21.3 when I attempted to update 
>>>> older files.
>>>> 
>>>> What am I missing?
>>> 
>>> A recent enough version of Python?  Can you figure out what Python
>>> version is used by your installation?
>>> 
>>> -- 
>>> David Kastrup
>> 
>> David,
>> 
>> Thanks for responding. The Lilypond 2.21.4 app contains:
>> 
>> Lilypond.app->Contents->Frameworks->Python framework->Versions->2.6
>> 
>> However, the system installed version is later-
>> 
>> MacBook-Air:~ (me)$ python --version
>> Python 2.7.16
>> MacBook-Air:~ (me)$ which python
>> /usr/bin/python
>> 
>> I thought Lilypond.app was “self contained” in the sense of providing
>> the necessary binaries.
> 
> Well, depends on who creates the app.  LilyPond 2.21.4 will require
> using a Python 3 variant if I am not mistaken, so it may be that the
> application bundle was not assembled properly.  This is a recent change,
> maybe the creators have not caught up?
> 
> -- 
> David Kastrup

David,

Thanks for your time and the explanation. I tend to approach these things with 
“what am I doing wrong,” and any evidence to the contrary is always welcome.

Regards,

Stan