$ pip3 install psycopg2

ld: warning: search path '/usr/local/opt/openssl/lib' not found
ld: library 'ssl' not found
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command '/usr/bin/clang' failed with exit code 1
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for psycopg2
Failed to build psycopg2
ERROR: Could not build wheels for psycopg2, which is required to install pyproject.toml-based projects


# Unix
export CFLAGS="-I$(brew --prefix openssl)/include"
export LDFLAGS="-L$(brew --prefix openssl)/lib"

# Ubuntu/Debian
export CFLAGS="-I/usr/include/openssl"
export LDFLAGS="-L/usr/lib/openssl"

# Red Hat/Fedora
export CFLAGS="-I/usr/include/openssl"
export LDFLAGS="-L/usr/lib64/openssl"