pip install psycopg2 错误！

Collecting psycopg2 Using cached psycopg2-2.8.5.tar.gz (380 kB) ERROR: Command errored out with exit status 1: command: /home/yu/Projects/.env/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-tzprgufs/psycopg2/setup.py'"'"'; __file__='"'"'/tmp/pip-install-tzprgufs/psycopg2/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-tzprgufs/psycopg2/pip-egg-info cwd: /tmp/pip-install-tzprgufs/psycopg2/ Complete output (23 lines): running egg_info creating /tmp/pip-install-tzprgufs/psycopg2/pip-egg-info/psycopg2.egg-info writing /tmp/pip-install-tzprgufs/psycopg2/pip-egg-info/psycopg2.egg-info/PKG-INFO writing dependency_links to /tmp/pip-install-tzprgufs/psycopg2/pip-egg-info/psycopg2.egg-info/dependency_links.txt writing top-level names to /tmp/pip-install-tzprgufs/psycopg2/pip-egg-info/psycopg2.egg-info/top_level.txt writing manifest file '/tmp/pip-install-tzprgufs/psycopg2/pip-egg-info/psycopg2.egg-info/SOURCES.txt' Error: pg_config executable not found. pg_config is required to build psycopg2 from source. Please add the directory containing pg_config to the $PATH or specify the full executable path with the option: python setup.py build_ext --pg-config /path/to/pg_config build ... or with the pg_config option in 'setup.cfg'. If you prefer to avoid building psycopg2 from source, please install the PyPI 'psycopg2-binary' package instead. For further information please check the 'doc/src/install.rst' file (also at <https://www.psycopg.org/docs/install.html>). ---------------------------------------- ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

通过查看官方资料得到原来是缺少了libpq-devel这个库，安装这个库就编译通过了！

sudo dnf install libpq-devel