pg_config executable not found

Question

I am having trouble installing psycopg2. I get the following error when I try to pip install psycopg2:

Error: pg_config executable not found.

P         


        

Answer 1

To those on macOS Catalina using the zsh shell who have also installed the postgres app:

Open your ~/.zshrc file, and add the following line:

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

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Then close all your terminals, reopen them, and you'll have resolved your problem.

If you don't want to close your terminals, simply enter source ~/.zshrc in whatever terminal you'd like to keep working on.

Answer 2

You need to upgrade your pip before installing psycopg2. Use this command

pip install --upgrade pip

Answer 3

On Mac OS X and If you are using Postgres App (http://postgresapp.com/):

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

No need to specify version of Postgres in this command. It will be always pointed to latest.

and do

pip install psycopg2

P.S: If Changes doesn't reflect you may need to restart the Terminal/Command prompt

Source

Answer 4

Try to add it to PATH:

PATH=$PATH:/usr/pgsql-9.1/bin/ ./pip install psycopg2

Answer 5

Here, for OS X completeness: if you install PostgreSQL from MacPorts, pg_config will be in /opt/local/lib/postgresql94/bin/pg_config.

When you installed MacPorts, it already added /opt/local/bin to your PATH.

So, this will fix the problem: $ sudo ln -s /opt/local/lib/postgresql94/bin/pg_config /opt/local/bin/pg_config

Now pip install psycopg2 will be able to run pg_config without issues.

Answer 6

On Linux Mint sudo apt-get install libpq-dev worked for me.