Installing psycopg2 fails on MacOS with unclear error message

Question

Trying to install psycopg2 using pip 19.1 on MacOS 10.14.4 returns the lengthy error message below. I understand there are warnings related to gcc, but given the actual error me

Answer 1

I had this problem running pip install psycopg2 while I was running OSX 10.14.6. I fixed it by running this simple command:

1. sudo ln -s /Applications/Postgres.app/Contents/Versions/latest/bin/pg_config /usr/local/bin/pg_config

2. it asked for my password

3. ln: /usr/local/bin/pg_config: File exists( than this appeared)

4. export PATH="/Applications/Postgres.app/Contents/Versions/latest/bin:$PATH"

(then I ran the command above)

5. python pip install pyscopg2 .

(than i ran the code above. keep in mind I'm running python 3.7 in my virtual environment and I don't have to use python3 pip3 install pyscopg2.)

6.Successfully installed psycopg2-2.8.4