This fixes the following error when trying to launch the vault server using its CLI (used in docker-compose for instance):
swh-vault_1 | Traceback (most recent call last): swh-vault_1 | File "/srv/softwareheritage/venv/bin/swh", line 8, in <module> swh-vault_1 | sys.exit(main()) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/core/cli/__init__.py", line 111, in main swh-vault_1 | return swh(auto_envvar_prefix='SWH') swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/core.py", line 764, in __call__ swh-vault_1 | return self.main(*args, **kwargs) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/core.py", line 717, in main swh-vault_1 | rv = self.invoke(ctx) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/core.py", line 1137, in invoke swh-vault_1 | return _process_result(sub_ctx.command.invoke(sub_ctx)) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/core.py", line 1137, in invoke swh-vault_1 | return _process_result(sub_ctx.command.invoke(sub_ctx)) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/core.py", line 956, in invoke swh-vault_1 | return ctx.invoke(self.callback, **ctx.params) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/core.py", line 555, in invoke swh-vault_1 | return callback(*args, **kwargs) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/click/decorators.py", line 17, in new_func swh-vault_1 | return f(get_current_context(), *args, **kwargs) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/vault/cli.py", line 57, in serve swh-vault_1 | app = make_app_from_configfile(config_file, debug=debug) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/vault/api/server.py", line 235, in make_app_from_configfile swh-vault_1 | vault = get_local_backend(cfg) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/vault/api/server.py", line 224, in get_local_backend swh-vault_1 | return get_vault('local', args) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/vault/__init__.py", line 40, in get_vault swh-vault_1 | return Vault(**args) swh-vault_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/vault/backend.py", line 83, in __init__ swh-vault_1 | self._pool = psycopg2.pool.ThreadedConnectionPool( swh-vault_1 | AttributeError: module 'psycopg2' has no attribute 'pool'