[SOLVED] Where can I get the Python 2to3 library on Buildroot

Where can I get the Python 2to3 library on Buildroot

I get the following error when importing gmusicapi in Python 2.7 on a Buildroot Linux system:

>>> import gmusicapi
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "gmusicapi/__init__.py", line 4, in <module>
    from gmusicapi.clients import Webclient, Musicmanager, Mobileclient
  File "gmusicapi/clients/__init__.py", line 4, in <module>
    from gmusicapi.clients.webclient import Webclient
  File "gmusicapi/clients/webclient.py", line 5, in <module>
    from past.builtins import basestring
  File "past/__init__.py", line 88, in <module>
    from past.translation import install_hooks as autotranslate
  File "past/translation/__init__.py", line 41, in <module>
    from lib2to3.pgen2.parse import ParseError
ImportError: No module named lib2to3.pgen2.parse

Python can't find lib2to3. Neither can I ;-). Is there anywhere I can download this library? I'm using Buildroot, so I can't simply do pip installs.

This is not a duplicate of: How to use/install python 2to3?

Solution

lib2to3 is a standard library, normally included with Python. However, the buildroot build system explicitly removes it.

I'm not certain if Buildroot actually lets you disable their patch; the python.mk file appears to hardcode the flag:

PYTHON_CONF_OPTS += \
    --without-cxx-main \
    --without-doc-strings \
    --with-system-ffi \
    --disable-pydoc \
    --disable-test-modules \
    --disable-lib2to3 \
    --disable-gdbm \
    --disable-tk \
    --disable-nis \
    --disable-dbm \
    --disable-pyo-build \
    --disable-pyc-build

and I don't see an option to add --enable-lib2to3 to override that. You may want to check with the Buildroot community if this is at all an option. Otherwise, I'd just edit that make file.