Installation error in Google Colab

[jatin-k31]

I tried installing ecole in google colab on both mac and windows with this code.

'''
! wget https://repo.anaconda.com/miniconda/Miniconda3-py37_4.8.2-Linux-x86_64.sh
! chmod +x Miniconda3-py37_4.8.2-Linux-x86_64.sh
! bash ./Miniconda3-py37_4.8.2-Linux-x86_64.sh -b -f -p /usr/local
import sys
sys.path.append('/usr/local/lib/python3.7/site-packages/')

!conda update -n base conda
!conda config --add channels conda-forge
!conda config --set channel_proirity strict
!conda install -c conda-forge ecole
'''

But I keep getting this error again and again.

Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/conda/exceptions.py", line 1079, in call
return func(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/conda/cli/main.py", line 84, in _main
exit_code = do_call(args, p)
File "/usr/local/lib/python3.7/site-packages/conda/cli/conda_argparse.py", line 80, in do_call
module = import_module(relative_mod, name.rsplit('.', 1)[0])
File "/usr/local/lib/python3.7/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1006, in _gcd_import
File "", line 983, in _find_and_load
File "", line 967, in _find_and_load_unlocked
File "", line 677, in _load_unlocked
File "", line 728, in exec_module
File "", line 219, in _call_with_frames_removed
File "/usr/local/lib/python3.7/site-packages/conda/cli/main_install.py", line 8, in
from .install import install
File "/usr/local/lib/python3.7/site-packages/conda/cli/install.py", line 19, in
from ..core.index import calculate_channel_urls, get_index
File "/usr/local/lib/python3.7/site-packages/conda/core/index.py", line 10, in
from .package_cache_data import PackageCacheData
File "/usr/local/lib/python3.7/site-packages/conda/core/package_cache_data.py", line 15, in
from .path_actions import CacheUrlAction, ExtractPackageAction
File "/usr/local/lib/python3.7/site-packages/conda/core/path_actions.py", line 30, in
from ..gateways.connection.download import download
File "/usr/local/lib/python3.7/site-packages/conda/gateways/connection/download.py", line 13, in
import ctypes
File "/usr/local/lib/python3.7/ctypes/init.py", line 7, in
from _ctypes import Union, Structure, Array
ImportError: libffi.so.6: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/bin/conda", line 13, in
sys.exit(main())
File "/usr/local/lib/python3.7/site-packages/conda/cli/main.py", line 150, in main
return conda_exception_handler(_main, *args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/conda/exceptions.py", line 1371, in conda_exception_handler
return_value = exception_handler(func, *args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/conda/exceptions.py", line 1082, in call
return self.handle_exception(exc_val, exc_tb)
File "/usr/local/lib/python3.7/site-packages/conda/exceptions.py", line 1126, in handle_exception
return self.handle_unexpected_exception(exc_val, exc_tb)
File "/usr/local/lib/python3.7/site-packages/conda/exceptions.py", line 1137, in handle_unexpected_exception
self.print_unexpected_error_report(error_report)
File "/usr/local/lib/python3.7/site-packages/conda/exceptions.py", line 1207, in print_unexpected_error_report
from .cli.main_info import get_env_vars_str, get_main_info_str
File "/usr/local/lib/python3.7/site-packages/conda/cli/main_info.py", line 19, in
from ..core.index import _supplement_index_with_system
File "/usr/local/lib/python3.7/site-packages/conda/core/index.py", line 10, in
from .package_cache_data import PackageCacheData
File "/usr/local/lib/python3.7/site-packages/conda/core/package_cache_data.py", line 15, in
from .path_actions import CacheUrlAction, ExtractPackageAction
File "/usr/local/lib/python3.7/site-packages/conda/core/path_actions.py", line 30, in
from ..gateways.connection.download import download
File "/usr/local/lib/python3.7/site-packages/conda/gateways/connection/download.py", line 13, in
import ctypes
File "/usr/local/lib/python3.7/ctypes/init.py", line 7, in
from _ctypes import Union, Structure, Array
ImportError: libffi.so.6: cannot open shared object file: No such file or directory

Can you please help me with this?