Environment info

• transformers version: 4.4.2
• Python version: 3.7

Who can help

To reproduce

Steps to reproduce the behavior:

1. Install transformers

conda create -y -n py37-trans python=3.7 transformers -c HuggingFace
conda activate py37-trans

2. import transformers throws the following error:
   ModuleNotFoundError: No module named 'importlib_metadata'

Expected behavior

Import should be successful.