psycopg2
Command "python setup.py egg info" failed with error code 1
Installing pgAdmin 4.
pip install pgadmin4-1.1-py2-none-any.whl
And outputs at the end this
Command "python setup.py ... failed with error code 1 in /tmp/pip-build-aofWrQ/psycopg2/
What is written here does not help, at least the first answer.