[Python] Why is Hello Magenta Colab failing with 'metadata-generation-failed' error?

I'm currently trying out to use the Magenta (music generation) library using python, starting from the official 'Hello Magenta' colab notebook (https://colab.research.google.com/notebooks/magenta/hello_magenta/hello_magenta.ipynb). However, the colab notebook fails on the setup stage with metadata generation failed error.

This is the first block of code to be executed.

print('Installing dependencies...')
!apt-get update -qq && apt-get install -qq libfluidsynth2 fluid-soundfont-gm build-essential libasound2-dev libjack-dev
!pip install -qU pyfluidsynth pretty_midi

!pip install -qU magenta

# Hack to allow python to pick up the newly-installed fluidsynth lib.
# This is only needed for the hosted Colab environment.
import ctypes.util
orig_ctypes_util_find_library = ctypes.util.find_library
def proxy_find_library(lib):
if lib == 'fluidsynth':
return 'libfluidsynth.so.1'
else:
return orig_ctypes_util_find_library(lib)
ctypes.util.find_library = proxy_find_library

print('Importing libraries and defining some helper functions...')
from google.colab import files

import magenta
import note_seq
import tensorflow

print(' Done!')
print(magenta.__version__)
print(tensorflow.__version__)


And this is the printed result of the block above.

Installing dependencies...
W: Skipping acquire of configured file 'main/source/Sources' as repository 'https://r2u.stat.illinois.edu/ubuntu jammy InRelease' does not seem to provide it (sources.list entry misspelt?)
E: Package 'libfluidsynth2' has no installation candidate
Preparing metadata (setup.py) ... done
Preparing metadata (setup.py) ... done
Preparing metadata (setup.py) ... done
Preparing metadata (setup.py) ... done
error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
Preparing metadata (setup.py) ... error
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
Importing libraries and defining some helper functions...


I searched about this kind of problems and I think it is likely that the colab notebook is too old and deprecated to be used on the default installations on colab nowadays. So I tried starting off with pip upgrade, but this gets the colab session restarted because of certain libraries being imported multiple times and does not help much. What should I fix to use run these code properly?

Continue reading...